[tsubaki]

I agree with spare about the bunks needing fit to the animal being carried but I'm a proponent of a combination of rollers and bunks being I might use different ramps with different slopes depending on where I put in at.
Spray Silicone the bunks, it makes a big difference.
willy, I know you gettin old and stuff but it ain't easy for a 50 year old either to winch up a boat this size, even if it's got a two speed on it.
You really also need a ... (well, to be politically correct) companion to do the winch portion. Even if you have to use him to cut bait and and omit his gas portion.