But it really isn't that hard flying off a deck. No crosswind, no need to worry about divs, and if the weather is poor - ask the driver to go somewhere else. As for the engineers - it's just like working on land except a bit more cramped. All your spares etc are located within a 400yd radius, as is all your team and pretty much everything else you need. The aircraft parkers can practice on a dummy deck if they want. It really is not that hard.