I used to fish trout but not in your aria. If your casting, I've had good luck with casting spinners on an 18 inch lead with a small dark swivel. I cast downstream past where I think the fish are and do a slow retrieve. The current helps the action so you can slow the retrieve down a bit. But your best bet is to find a good local bait and tackle shop and tell 'em what you've told us. Those guys will know the aria and the local food chain to help you get the best for whatever style of fishing you do.
Bearing the burden of responsibility..... It's probably my fault.
Treat your silver as if it were earthenware and your earthenware as if it were silver - Seneca, Letters of a Stoic