Hi Geoff, I’ve been wanting to shoot from a kayak for years, this year I bought a Hobie i11 Peddle inflatable. It’s stable as a rock, I have a waterproof fishing bag that hooks up to a very comfortable seat and carry my A9ii and 200-600 and extra stuff. It folds up and everything fits in a roller bag, 45 lbs total. Perfect for a 74 year old like me. Love your shots.