Bunny hopping, to me, is something to be discouraged not encouraged.
You can run an OA 0.8.8 server with /dmflags 128 for disabling accelerated jumping.
Disables strafe jumping and thus limits you to g_speed for plain level moves effectively. It is important to know that on Accelerator Pads you shall not press forward or you slow down and fall down. Movement and stopping gets non-slippy. Side-effect is an increased mouse sensitivity (you can try /sensitivity lowered by 1/5).
Makes many maps impossible to be played as they were meant .