Brass can be a fine material to use for a number of hobby projects, including drive shafts for remote-controlled boats. Bill Zumwalt of the RC boat portal Old River Bill’s RC Towboats said that a round brass tube works for drive shafts but only after an extensive amount of work done. He warned, however, that such a setup is only applicable to RC ships or workboats.
Any way you put it, hobbyists who have the skill to customize and upgrade will be able to turn simple crafts into serious pieces of workmanship. That may be possible if you source a modest part of your materials from companies such as Rotax Metals Inc.