Heck even steel trailers flex. Next time you see a big steel 40ft boat trailer without a boat on it, go stand on the a$$ end of the trailer, in the corner. Bounce up and down on it, and watch the entire trailer twist.

I remember seeing a 47 fountain get hauled into the marina on a aluminum I beam trailer. That thing flexed like a wet noodle.

I changed my bow roller set up. I got 2 strips of alluminum and 2 rollers so the 2 rollers can pivot where the origional roller was, that way when the trailer flexes its still away from the rollers

Fuggedaboutit! That trailer can take a ton of abuse, as seen here:

[youtube]https://www.youtube.com/watch?v=R6tbABRT1sA[/youtube]