I just figured the pop rivits would look clean and to remove takes to seconds to drill them out, I havent actually seen the p pad in person yet as its in the mail. But if its better to use washers and bolt thats easy enough too.
Also I have a 7metal west fender (16gage steel) mounted in two places off the frame and a strong sissy bar. My chick is about 110 pounds. will that fender hold her or should I try and make that fender stronger underneath
Im not sure what size chicago screws are available. Some big ones would look cool and clean. It would look like a smooth (without the rivet hole) rivet head on the outside and have a screw or bolt on the inside. But Ive only ever seen one size diameter chicago screw.
I taped mine down, marked the holes, drilled them then welded nuts to the under side of the fender. Chrome bolts and washers hold in in place, and it can be removed in about 30 sec. to swap on a little more ass friendly seat for long rides.