I bought an i12s this past weekend and went out on the Willamette river near Portland, Or.
Saturday afternoon, after peddling ~2 miles upriver, I started back, downstream and downwind (I don't have a sail yet).
A huge thunderstorm caught me from behind near St. Johns Bridge and was eventually blown safely to my landing, but not without a few moments of doubt.
Several times, I found my rudder not working effectively. The lightly loaded boat would wander right, I would rudder increasingly left and the boat would spin to the right. Same thing happend to my son next morning and to me again the following afternoon. Solution was to stow the rudder, pull out the paddle and get going in the right direction with the paddle. Then, I could drop the rudder and start peddling again with some directional fidelity. Anybody else had this issue? Would the larger rudder solve it? Is it from the currents and wind? Am I too far forward or stern in the boat? There is a wide range of adjustment to the seat and peddles.
Otherwise, I love the boat. I put it on top or inside my van and am on the water in 8 minutes. Now mapping all the wonderful waterways around Portland to explore. I have a folding Dahon bicycle and am looking for a folding bike trailer. I'll park upstream, put the bike & trailer on the boat (~40 lbs), go downstream, land and pull the boat (bundled) with the bike back to the parked car. What a hoot!