I would highly recommend the aluminum with bunk route. I had a roller trailer for my old 20 which I thought was fine, after going to an aluminum bunk for my new 20, wow how easy can it get? Just make sure if you go that route to get the forward vee bunks, they really make a world of difference.
I do not keep my seacraft in the water and trailer 100% of the time and I really, really love my bunk trailer.
