St. Mary's Rapids is the place where I have learned spey casting. I started with a 11.5 foot spey rod, fished with a 16 footer and now I am settling down with 14 or 15' rod. The rapids is made of several giant pools. You can get to the head of pools but you can not walk down. Most time even when fishing is good, fish are holding 100' below. It is my opinion that you better stay home and practice casting if you can not cast at least 90'. The best set up is a floating line either wc or mid spey line, with #8-6 bead headed wooley bugger in am and #8 non-weighted muddler in pm. The more water you cover, the more fish you will catch. Especially summertime fishing here is simply placing your fly in the water. I like to see more fly fishermen in this river and I hope someday this river will be fly fishing only, no weight on the leader-no chuck and ducking and catch and release. I fish almost every weekend so if I see you there, I will show you aroud. Lastly, you should have a wading staff and pair of studed wading boots. Hopefully see you there.