New trailer suggestions for my 20' (Seafari)?

[SailorChlud]

I'd say stick with roller trailer and single axle. As for adjustment off the bat, your dealer should be able to get you close, but you might have to move the rollers a few inches either way after you see how the boat recovers the first time out. I have a 5Starr that has been good with a torsion axle.