So i have a piranhamax 153 for my kayak, i'm going to do the thru-hull mount. My question is the best way to do it. what should i use to stick it to the hull that is pretty permenant, but doesn't require a scientist to do it? i have heard of marine goop and other things like it, also i have heard of making a well out of electrical putty and filling it with water before i go out. honestly i prefer not to have to add water before each launch,but if it works better then so be it. any help would be great!