Wisdom on Pyrithum killing?

[Saxon]

I agree, 100% is safe, but I want to push it higher. Patrolling is not so expensive, particularly in sea provinces where the units are often flying. You do not need many of those to be effective and if you can boost taxes 20 or 30 pieces a turn, you rapidly cover your costs. Throw in you have a ready to go reaction force and it is a pretty good deal. I saw in another thread that one person uses wounded units to patrol. That is a bit more micromanaging than I do, but it is a good idea. The wounded unit is a liability in combat, but can give you good value patrolling.

So, any suggestions on a nice percentage where you do not reduce your population too much?