For my H26, I use the Master Lock square tube bar. Because of the tight fit, it would only install upside down, with the lock's key hole facing up. After a year or so, the lock corroded enough that the key wouldn't open it. With a Dremel tool, a portable battery booster, and a cheap power inverter, I cut through the square bar in about 1 minute. Still, I bought another one just like it as a replacement. This time I I packed the keyhole with bearing grease. Like they say, if someone really wants to steal your outboard, they will. BrianW