I have used both music wire and dura-aluminum gear. I prefer wire, usually 1/8, but  5/32 can be used on a heavy plane. I mount the gear on the fuselage with nylon clips. If possible I try to make the gear in one piece. I have occasionally put the gear in the wing  and currently have a profile setup that way. I have not had any problems with the wing mount. It seems no matter what aluminum alloy I have tried, it bends to easily upon impact with the deck. 

I agree on the music wire being the best choice.  Aluminum will take it but need "re-bending" after most landings.  I think 2-piece gear legs are OK, IF the through the fuselage hole is beefed up with something.  I use a 1/4-20 brass bolt epoxied into the motor mount beams for up to 5/32 wire and the two landing gear clips with through 4-40 bolts & nuts.   

A carrier landing is very equivalent to a controlled crash.  Full size LG design tests include a 32G drop test!  Land based is only 14G.

As far as landing procedure.  The best I've seen is:

Make sure you're lined up during your low speed laps.  Give the signal when you make your last low speed lap, (or tell the judges ahead of time you will land the lap after the low speed ends).  Start a gradual descent as you go around with the object to hit the deck on that lap.

I've tried to do it, but usually panic and have to go around.   Takes a lot of practice but works like a charm for those who take the time for practice.  Usually my first practice flight is my first official attempt!