Scotty,
I've ridden my Triumph's and BMW's with stock seats, Corbins and one with a Sargent and have used an Airhawk with all (on same bike for comparison). The Airhawk worked fine on all although it took a bit of experimentation to get the "Goldilock" syndrome going (just the right amount of air). Some just sit the cushion on the seat, but I found I had to attach an elastic strap under the seat to keep it in the proper position - otherwise if it shifted forward or back the air re-distributed in the cushion and changed the effect. Plus, my problem is that even with my factory lowered BMWs and my after-market lowered Triumph Street Triple, I can only barely touch my tippy-toes (or on the Triumph, only one toe of one foot) so when I put the Airhawk on the seat I'm sitting just enough higher that it really makes it difficult for me to come up to stops. By using the strap under the seat, I would actually stand up on the pegs for a second and flip the cushion back behind me when I was entering areas where I would be doing a lot of stop and go riding and then re-position it when I left that area and got back out on open road. Factoring in this hassle, I truly believe my Alaska sheep skin did as well or better than the cushion. I tend to wait until my second or third day of riding 400 to 500 mile days when my rear end starts to feel a bit sore (broke my tailbone years ago and it still bothers me after several days of travel) and then decide to use some form of "cushion". I need to commit to starting off with the sheepskin and I think I'll do better in the long run. I had to re-inflate the Airhawk after a day of travel and then try to find jsut the perfect inflation level each day and just didn't like messing with it. I haven't done any long distance touring on the Spyder yet since I just got it in October and my touring season was over for the year; 300 mile days on it are all I've done locally and usually not back to back days, so I'll have to wait and see how my stock seat does in April/May when I take my first week or 10 day trip and then decide if I need anything different. I think I'll pack my sheepskin for that first trip, just in case, tho.