When a soaring club provides towplanes to a regional or national
contest, how is a club typically compensated for loaning out their
equipment, or are they?

Is a contest and the use of a club towplane by non-club members seen
as a "commercial" operation? And if so, does the towplane need a 100
hour inspection to be legal?

How are tow fees assesed so that contestants, who are probably not
members of the club providing the towplane, pay a fair amount so that
club members are not subsidizing their tow fee?

Brad