Craided Power-Pro line...

How often do I need to change Power Pro line? I used to change my mono once a season or so, but Power Pro is pretty expensive, so I'd rather not...it seems much more durable. Will it weaken significantly over one season?

no power pro has an unlimited shelf life. i know people who have some that has been in use 7 years. if it starts to fray cut the frayed part off and keep fishing.

I meant "Braided"