I wade fish the Yough in SW PA and have trouble reaching most of the water due to big slippery rocks slanted all different angles, strong currents, big deep holes and high banks with lots of trees. Was thinking I had to get some type of boat until I came across OPST. They have developed a short skagit head that supposedly enables Spey casting with a single-handed rod as light as 3 weight. This technique would allow me to cast further when there is no room to backcast and to cast while sitting down in a boat with my regular trout rods. Seems really cool, almost revolutionary! You folks may want to check out the link below to their site, which is a little clunky but quite interesting. Lots of videos that show it actually works with a single-handed rod.
http://www.opskagit.com/about-us.html
http://www.opskagit.com/about-us.html