I'm going down to Pointe-Au-Chien in South Louisiana to fly fish for the first time. We'll be in the canals about a mile or 2 from the coast. I have only fly fished for trout, so that's the equipment I have. I went last year with traditional tackle and caught fish anywhere from 5 to 8 pounds. I have a 5 wt rod/reel. My question is: can I get away with not buying new equipment? I was thinking of putting heavier fly line on the same rod. Will this work?

Also, what are some of the best flies that I can tie for reds and speckled trout? Keep in mind that I'm on a very tight budget for this trip, so if you know of flies that can be tied with cheap or every-day materials, that would be best.

Thanks in advance!
Eric