I live in Montana and would never use a nymph in July, but that is just me. Hoppers, Elk Hair Caddis, Salmonflies, Stimis, Peacock PMX are all good patterns. You should be here right at the beginning of some great dry fly fishing. I will caution you that it may be a bit crowded, but you can always find places to enjoy the river. Jacklin's would also be my choice for a guide.

There is a campground up river from Ennis that rents rafts and has shuttle services if you want to float on your own. The Ruby and Gallatin will also be fishing well along with many of the other small creeks and streams in the area.

Keep an eye out for snakes.