RE: Club Members insist on flying solo...
If they are flying a safe distance from the flight-line you should be able to easily fly & avoid their "box" of airspace. Their preference for solo access is just that -- a preference, not a rule or law. If you can't accommodate their preference, go flying.
There shouldn't be any concern unless the pattern guys are practicing over the runway, or in the circuit, in which case a good mid-air will cure that. We had a problem with 3D fliers who insisted on jamming the airspace over the runway -- until a SPAD cut one of them in two -- tough luck. The problem instantly dissappeared.