Looks good. What i did was to mount a geared motor in parallel with the crane pivot tube, then link with gear wheels and a chain, so it gave me full 360 degree rotation. Then, as it appears you did, use a second servo to act as the lift ram. I then ran out of space for a third for the winch drum, as it seems my hull is shallower than yours as supplied to me. If you are going to leave this panel as removeable,make sure you seal well as due to the flat bows, it does not take much forward speed to wash water over the bows and on to the deck, even in calm/still water, once moving. I learnt that the hard way !