Yes, that's why the requirement is 80, and not 30. Our strategies for taking towers are highly efficient and require minimal player killing, so we try our best to avoid pks when taking them as well as defending.

Our strategy for defending is this

2 people stay top in case someoe logs in or glitches up top.
the rest go down to guard the stairs/door on a 3 second timer, and we don't attack when guarding. This way we don't die as fast, nor do we lose ap.