Timmy,
It's my favorite, because trout will rise all day. Also, you don't have to look for a specific riser, but you can "prospect" all day. Terrestrials are my favorite flies to fish on any water. A small foam ant behind an elk hair caddis will soon attach itsself to my 3wt, and won't come off until sweatshirt weather is here.
🙂
Valley might get harder, but the summertime is when I get to fish it most. It just works out that way, and I've gotten used to it.