Are you planning on keeping this on your boat outside 24/7/365? If so, I would just go buy a good tarp from Wal-Mart. If you only want something inexpensive to cover your boat while traveling, then just go get one of the Marine Raider Platinum series for about $130 and keep your receipt. When you are through hauling your boat, make sure you put the cover up dry.
yes... my boat is being stored outside in the open. I get the impression from most people that I should just buy a new one every year, which I'm fine with since I don't think custom ones last as long as they say so anyways (used the same way). Mine's a 20 footer.
I have been pondering about those Marine Raider covers actually. Just didn't see any reviews of them online.