Tarpman, just piece of advice.
No amount of padding (towels, foam) will save your back fender and saddlebag lids from paint rubs and scratches if you decide to bungee a big duffel (or something) back there for a trip.
The long ride with bumps and vibration does the work. I speak from experience (and rubbed paint).
I have the no longer available correct honda solo rack behind my seat, which is used to elevate my load from the paint. First, I ziptied a 5/8 dowell across the rack to hold the big duffel from drooping and rubbing the bag lids (which it did). Then I got a waterproof drybag that holds it's shape, even loaded full.
In a pinch, you could stick the passenger seat back on to hold luggage off the paint.
