J105's are trailerable, and staying with in the 8.5' width issue. You just have to turn them slightly sidways! Being as the OP is form here in the NW, hopefully he has seen how the unlimited hydros are hauled around, they are over 12' wide, and fit legally on the road at 8.5'
Not that a J105 is the most comfortible boat around, a boat wider tha 8.5' is legally trailerable if one thinks out of the box! There are a couple of custom trailer builders in Bellingham that can make a wider boat legal!
You will want a reasonably size DOT class 2 or 3 truck tho! ie over 8500 GVWR to upwards of 12K!
She drives me boat,
I drives me dinghy!