I am thinking about buying a used ocean kayak malibu 2. I have a few questions for the kayak gurus.
1. How hard will it be to convert it to a fishing yak? It does not have any storage now.
2. How hard is it for a single person to use a two person yak?
Thanks for responding in advance.
I have never fished from a yak but I have been down the Guadalupe several times in the other style of kayaks many years ago in my youth.

I don't have that particular kayak, but do have a tandem. If you are tall/have long arms paddling a tandem shouldn't be a problem. It might not be the fastest kayak on the water. With ingenuity and all the mounting options these days, I can't imagine any kayak not being easy to convert to fishing

This one might be a good one for Shane the Master Davies.
He's been guiding out of them for yrs.
www.ShaneDaviesGuide.com
The red yak in this pic is his.

I paddled a Malibu 2 in the Keys last month (it was available, and I wanted to go fishing with Daveg99 that morning) by myself, and it wasn't great. I tried from the back and front seats, and the kayak was difficult to propel. I sat in the middle, and it went where I pointed it, but without a seatback it wore me out in an hour. If you are going to use it solo, you will definitely want to install a seat in the center. A bleacher seat from Academy might work.

I had the Malibu 2 XL version for a few years when I lived in PA and NJ. I used it as a family kayak but spent most of my time using it solo to fish rivers, lakes, and the ocean. I thought it paddled well and handled waves and chop really well. I'm 6.2 and I could manage loading and unloading it myself without too much trouble.

As others have mentioned, I think finding the optimum seating position will be the most challenging. I sat in the rear seat and used the front area for my gear except for my rods.

In summary, you can rig it to work solo but it will have some shortcomings compared to a dedicated fishing kayak, but If you need the flexibility to have a tandem it is a good option.

Think about a Native Watercraft 14.5 tandem. They are relatively easy to convert to solo and are designed for it. Of course it's a canoe/yak hybrid so probably wouldn't recommend it for BTB because it has no scupper holes to drain out. But for fresh water can be a fairly dry ride.
I am NOT pushing the product, just been looking at them myself.
See used ones on Craig's list occasionally. Might check out TKF also.

The reason I ask about the malibu is because the guy I work with has one sitting in his garage that he bought used and used it 3 times and now he doesnt use it

The reason I ask about the malibu is because the guy I work with has one sitting in his garage that he bought used and used it 3 times and now he doesnt use it and the price is right