Morning guy. I'm heading up around the Rock creek area for a couple days this coming week. I've never fished for trout with a fly rod before but I've been know to bass fish with one. I got a few flies to try but do I need to use a small lead to hold the fly down or just let it stay on top of the water this time of year? Im not expecting to go wear them out but would like to catch a few on the fly rod.