A bunk trailer wouldn't be ideal by any means, but I didn't want to rule out any good options unnecessarily. I went through the Shoreland'r parts section and scrolled through the Lund OEM Trailers and found the standard bunk trailer listed for impacts. Then I searched the 4,000lb roller trailers to find the equivalent size roller tandem axle. My concern was as many, is there too much pressure per roller that would dent the hull up on long trips. (1k mile NW Ontario)
There are a few threads here and Anonymouse posted up about the psi per roller, so that got me into researching that end of it. The trailers now days seem to come with 12 sets of rollers per side (24) total. The believe the size of the shorelander roller is about 5x3 roughly, so the estimate seems to be about 1.5 cubic inches of contact per roller. Taking the 3,000lb estimate / 35 (1.5in3 x 24) = 83.33psi per roller.
I agree that that bunk trailers do support the boat weight better. But my back would be more happy with the rollers long term. In time, I figure I'll end up taking the paint off the front bottom of it anyways doing shorelunches, builds character!
Fish the Northland
1875 Impact XS
150 Merc 4S
Helix 9 MSI G4N
Helix 7 MDI G3N