Join Date: May 2005
Location: Las VLXas (Vegas, baby!) NV U.S.A.
As long as the fender is mounted to the frame you can safely mount a seat. If it gets mounted to the swingarm, then a passenger simply adds more unsprung weight which is not a good idea...more so when you hit bumps and the passenger gets bucked up off the seat with the resulting abrupt wheel/swingarm movement.
"Ride Safe, Chop Safer" Motorcycles are not unsafe. However; they are extremely unforgiving of inattention, incompetence, ignorance, and stupidity.
Dismantling, sawzalling, and rattle canning does not make a bobber.
Those are STEPS toward customizing, not customizing unto itself.