Depends on the speed of your presentation...if fishing slow, or sight fishing...go light...if you are fishing big stuff fast...you can use 10-12lb easy, because it does not seem to matter. You must have a leader if fishing braid to trout though. A 3 turn surgeons knot works well for attaching braid to a mono or flouro leader.....It is a good enough knot, and you can tie one in 30 seconds or less.