I am thinking of buying a crusing catamaran (40+ feet) for some long distance blue water crusing and I have seen a few aluminum cats for sale. I have also read some good things about aluminum hulls in general (strong, tough, light compared to steel, easy to repair, etc.) Does anybody have an opinion about aluminum cats? Are they safe? Can they be repaired in third world countries? Are they light enough to take advantage of a cats speed? If aluminum is good, is steel better? Please help.