For me, seeing one hand casters fight their rod is a torture. I see the faults as clearly as words in a book. I’d like to help but don’t want to disturb. With spey rods, it’s even worst. Some fishermen get one as a gift or by interest but with the lack of support they use it for a few roll casts and fast back to their beloved, even if beaten, one hand.
I started to teach to help fishermen and to democratize spey casting. I have always choose to give one to one lessons but the introductions for the Ste-Marguerite river. I strongly believe that is the only way a student can really make the best of the course. IMHO, move from student to student while they are trying to master the movement is the worst thing a teacher could do.
Anyway, if Fly fishing is known for the beautiful movements, spey casting is not as well known while it is at least as beautiful for the multiple loops. In this sense, one hand spey casting is a feast of beauty and of technics.
Learn two hands spey casting means buying an expensive rod, a new $100+ casting line and the reel to accommodate this big line. Learn one hand spey casting doesn’t need any new equipment and is available for all fly fishermen. Admittedly it is not as easy on wrist than two hands but with two hands it is difficult to master the second hand. But the truth in learning one hand Spey casting is to learn the many casts, to get better with your rod and line and to eventually buy two hand rods knowledgeable. But as the end, every day on the river, you will need a better roll cast. Everyday, you’ll have hanging trees too close for an overhead cast and single spey will be the perfect choice. Or wind and current will call for a double spey cast.
Learn spey casting is mostly to get better at fishing.