So you don't want to buy a new seat and you don't want an Airhawk...

Not many options left for you. Some have tried wearing padded bicycle shorts under their riding gear. Others swear by the wooden beadseats or sheepskin pads. Browse through the USA "Ironbutt" rally riders info. they may have some new ideas.

In reality, new seat foam or a cushion are the easiest fixes to your problem.