As other reviewers have said, I should have bought two for my 232 Bryant boat but didn't know at the time. I guess because I didn't, it put too much stress on the one I did purchase, which I placed per the instructions but now when I lock it down, after a few minutes it slides down anyway and doesn't keep the top tight. I'm disappointed, but hopeful that the second one will work in place of the first, and I can move the original to the front of the boat where I don't need it to stand as tall. Besides this problem, this is a great product and I'm glad I purchased it.