Use spring loaded centering boards if you are concerned. Gives you a lot more room for error.
Have wobbly rollers on my trailer and the two front ones snag the strkes up front of my Seejay making it a tad hard pushing the boat off the trailer.
Tis a drive on off trailer though i dont drive it on or off due to age getting onn off the boat for fear of falling.
Was thinking of if such a beast existed (Ball Rollers) replacing the inner rollers so they can roll off the strakes rather than catch them and snag.
have looked online but zilch!!..
Use spring loaded centering boards if you are concerned. Gives you a lot more room for error.
There are ball rollers out there--I have seen them used on poly boats on the centreing guides. They appeared to be made of the same poly materials the hulls were.
Can u make some Vol? Make some kind of two part mould from timber bolt it together get a small throw away portable gas stove use a pot and melt some teflon strips than pour into mould
Knock the timber apart and sand the balls drill hole, done
Might have to order some shorter wobbly rollers fer up front get them out past the strakes . Start withthe front ones first see if i cant aquire a tad of momentum get them up n over the start of the strakefer starters see uif that helps??.
If it does ill shorten the second lot . Otherwise shall have to mover that heavy deep cycle battery to the back that i fitted for the Watersnake. get the nose up a tad when launching..
look up tapered rollers as these might do,
Tapered-Roller-Cap-17mm-Bore.jpg
also the ones that are used on the entry cradle of many trailers such as Dunbier etc might suit you.
Tapered rollers.JPG