I have a small (about 15" LOA) radio control yacht I bought on holiday, many years ago as a quick build to give me something to do. It worked very well, but I stored it in a garage for seven months and with many other things the sails were despoilt by rats. I foolishly dumped the mast with the sails 
You used to be able to buy extruded aluminium masts in many sizes for models, but I have not been able to find any on line. The alternative is just a bit of carbon fibre tent pole, but an alloy mast would look better.
Any ideas (other than milling one from the solid)?
Neil
P.S. yes I am bored dog/cat/child sitting and cooking dinner so I can't stay in the workshop 
P.P.S. On the plus side, saw a fantastic mock sun (wikipedia calls them sundogs) on the way back from Nottingham earlier.