Great Damo! On the actuator all I can do is offer my advice, you can use what you want obviously, but an air ram is overkill and not needed. An air ram is up and down and thats it, with a servo you can adjust it for display on the ground if you want with a 3 position switch for instance or just use a dial or lever on the radio. It would look cool if after landing you have the 3 position switch set so that on the middle setting the hook is just off the ground so that you can taxi back. Kind of like what I see with all those guys that are afraid to use air brakes, they just deploy them when they taxi back to the pits! lol! Just some ideas, mine will be on the 3 position switch.