I simply cut a "U" of appropriate size in the end of a piece of plank and drill to match the mounting screws. I have a tank that I mount with rubber bands. I screw the whole thing down to a sawhorse with deck screws. It only takes a few minutes to make the mount. I have accumulated one for all my engines. The picture shows several. I move the "throttle arm to the mount I'm using. Simple, cheap and effective.