In our clubs case we require our tow pilots to join the SSA and that's it as far as out of pocket expenses for them providing they qualify with the insurance to fly our C-182A towplane. We have no requirement for them to pay the initiation or monthly dues. If they tow for a certain number of hours then they get an hour of time in the clubs L-23. Most of our tow pilots don't take us up on that offer. It seems to me that requiring tow pilots to pay the clubs monthly dues is a recipe for having not enough tow pilots.