This makes no sense to me. Less drag and more mph equals more rpm.

He does not understand that losing 500rpms is due to more drag!!!

I am not knocking the Gorilla Hull....I would have mine done if I had the cash.

Dubee
Think of it this way. Drag or friction is simply a resistant load. More or less load can be in the form of weight (fat fishing buddy) or less drag or friction resistance (slicker hull). Thats why your boat will run faster and at (higher RPM) with only you and a quarter tank of gas than it will with you a full tank of gas and your fat fishing buddy (more load / less RPM). The less (load or resistance) your motor and prop have to have to work against the easier it is for the motor and prop to reach higher RPM's and higher speed. Thus less drag (resistant load) equals more RPM and MPH.

I have one on my ranger. Going to have to take it back to mike. It cracked at the seam and pushed a piece of glass out about 4 inches wide 1/2 tall. Had to use marine TeX to fix it for now.I called him, he told me to bring it back to him.With two talons and a 250 on back and four bat ties that's a lot of weight on the back.

I totally understand. That is my point. He said the gorilla hull created less drag but is turning 500 less rpm.

My name is Al. I am the owner and original founder of Toledo Fiberglass. I have been in business for well over thirty years now on Toledo Bend. I developed the original Gorilla Hull 28 years ago. I have been improving and modifying it ever since. I spent a few years racing boats and learned a great deal about performance during that time and have incorporated some of that knowledge into our Gorilla Hull. In reference to the speed enhancement, the 3/16th dimples give the optimal reduction in drag coefficient. A good example of this is the golf ball. The dimples improve speed and control while reducing drag in air, the effect is greatly enhanced in a hydraulic application. I Hope this helps to answer that question.

My name is Al. I am the owner and original founder of Toledo Fiberglass. I have been in business for well over thirty years now on Toledo Bend. I developed the original Gorilla Hull 28 years ago. I have been improving and modifying it ever since. I spent a few years racing boats and learned a great deal about performance during that time and have incorporated some of that knowledge into our Gorilla Hull. In reference to the speed enhancement, the 3/16th dimples give the optimal reduction in drag coefficient. A good example of this is the golf ball. The dimples improve speed and control while reducing drag in air, the effect is greatly enhanced in a hydraulic application. I Hope this helps to answer that question.

The original Toledo Fiberglass

I had Al put a Gorilla Hull on my old boat a little over a year and a half ago after tangling with a buoy marker cable. I fish Toledo and it saw quite a bit "stump action" before I sold it...never an issue. As far as performance goes it run 1 mph faster after the install. Now you could attribute that to different conditions or weight.

I researched the hull before having it done and everyone I talked to that actually had one loved it and said it was within 2-3 mph one way or another. I was also told that the one downside would be resale value. When I sold my boat it was actually a positive and helped sell it as the lifetime warrantee is fully transferable to the next owner.

And lastly, Al is great guy and was a pleasure doing business with.

Just my honest opinion after actually owning one...

Thanks Al for your contribution on the topic. I have a Yamaha 250HPDI it ran @5800rpm's WOT before the modification @ 69mph. After the modification and as of yesterday it currently runs 72mph WOT @ 5300 rpm's.

You are very confused when it comes to physics.

Maybe, but I did make it through college. And I'm always willing to learn. Why cant you accept these facts about my boat?

That's right...LESS RPM's. If you took two sail boats that were identical, put them side by side, one with the improved hull, In the same 5mph wind...which one moves faster?

Now take two identical bass boats, one with the improved hull, and lets pull each a skier in equal weight...which motor has a higher RPM? Its the one that is working harder, trying to keep up. The other one requires less power, the engine is producing the same power...that is constant, the work load changes. Therefore the RPM,s decrease.

Fact: I cannot no matter how high I trim up achieve any more RPM's than 5,300. Same powerhead,set-up, ect..ect..

Its ok to not know, but not ok to defend something you don't know about. When I got my boat back from Al, I called and ask the same things. I asked him did they mess with my motor, he laughed and said no, then explained it all. Call Al, ask him why the RPM,s decrease.

I called and talked to Al, very nice man. He agreed that less drag equals more rpm not less.

You are right, less drag will give more RPMs, but you are comparing absolutes and not applying a constant anywhere. So, sure, if you put a load on the motor (drag) and push the throttle to the floor and then take the motor out of the water (no drag) and max out the throttle the latter will have much higher RPMs.

What these guys are getting at is that the motor is not working as hard to get to a certain speed. If the boat before the improved hull ran 60mph at 5200RPM and now runs 60mph at 4800RPMs, then there is less drag. They are saying the motor is not having to work as hard to get to 60mph and therefore appears to have less drag than before.

I don't have one of these hulls, but if Al has put those dimples on it as he said above, then that is pretty cool and I would expect a performance increase the others have observed. It's the same reason why you may notice your boat runs faster with a slight ripple on the water versus a slick surface.