Simpler is better
I have a H240 and also was considering a tiller tammer. However I was not impressed with the wheel locking mechanism or the idea of having the lines obstructing movement. So what I did instead was to attach an eye-hook to the underside of the tiller, at an appropriate distance for adequite mechanical advantage. And then attached a snap hook in the middle of a 12 foot cord. I have stern cleats on the H2140 and when I need to secure the tiller, I just get the cord out of the lazerate and snap the hook on to the eye-hook, and then cleat off each end on the stern cleats, at the position I desire. It works great, and is very secure during any wind conditions. The best part is that it can be stowed away when not desired, and it doubles as a securing device when the boat is in the slip. Hope this help, good sailing!Daniel, s/v Endeavor