I place a stadium seat in front of the back thwart. Also, before heading out check into Joe Hyde's dual anchoring system in the forum. The rest of the advise is right on, especially the towel over the lap. And toes. Always find myself fishing barefooted. Casting has not been an issue, at least not that I remember. I've been fly fishing out of a cedar strip canoe for over 16 years so my memory of problems have perhaps faded. If you put a lot of body motion into your casting I could see that being a bit scary. I use mainly an arm and wrist motion and my canoe doens't even rock. Sometimes there are two of us in the canoe and still not an issue. We always cast sitting down, and practice that way. JGW