I finally found the solution to the spawn camping thing.
You cordon off a small area for respawn with rope or flagging tape. Players who are respawning must be inside that cordon and wait the appropriate time (5m, 10m, whatever). However, as long as they are INSIDE that zone they may shoot effectively and are considered unkillable.
It's repellent to the spawn campers.
Only thing is you have to keep the spawns far away from objectives, but if you're smart that's easy.
Age Verifier - Lower Vancouver Island
Brotherhood of Nod - Nod Prime || Vancouver Island Airsoft League - President