GRRRR!

The server's built in flying protection lags the server out more than it would if we allowed flying. I understand how flymod lags out the server, and yes there is no lag for floating or moving at 1x, however that is TOO hard to control.
It's really easier to just not allow it entirely.

Yeah that makes sense. I did test the plugin, though, and it works perfectly. If you go too fast, it teleports you back to where you were. So if you hold the speedboost key, and hold forward, you basically end up staying in the exact same place. The same thing happens if you try to fly. I'm not sure if it causes less lag than the built in protection though.