Re: Converting a roller trailer to bunks
If it ain't broke, fix it until it is.
Keep what you got; far superior to bunks and especially in salt water. if you don't like cranking get a power winch.
In real shallow water to launch you can even tie the boat off to the dock and pull the trailer out from under it--careful about the bottom. Works great on a muddy ramp. And with a roller at the last cross piece to catch the keel at the bow, you can pull up dry, too (with a power winch I once dragged the boat across a couple feet of mud and up onto the trailer).
do not set the last roller directly under the transom. You don't need to, and you risk pulling up too far and having it come off the roller. Give it at least 4" and even more.
transom savers are a total waste.
moving the roller bunks out toward the frame is a good idea. Also I'd take that front roller and move it back so it is under the keel, not against the rise. I can't really see but another keel roller amidships may help, too.
