This is a review for the 17-19 foot version. I had purchased it for my 16' jon boat, and it covered it and the 15hp motor one one end and all the way over the winch on the other, which is what I wanted. Well...I just bought an older 18' Arias bass boat with a Johnson 150, and a trolling motor on the front, and guess what, it covered the engine all the way to the front over the trolling motor! Using the front deck prop seat, the one windshield and the motor all create a cover that has no dips in it and should repel water perfectly. The attached straps go very nicely under the boat with trimming, and it all fits like a glove! I will update this after a while to let you know how it stands up to the weather, but so far I am impressed. I am now going to order another for my jon boat!!