Though i have a conventional all moving tailplane (and fin!) on my funfly design you may find this useful...

I simply used two carbon fibre tubes for an axle/bearing arrangement (obviously you need to choose the sizes carefully so that one fits snuggly into the other). The inner tube (6mm) also doubled up as a spar for the tailplane, though you couldn't do this on a V-tail. However you could mount two bearings (8mm on mine) at angles in the fuz, and simply glue on washers so that the axles couldn't pull out (as is done on my fin (only the top half moves) - check out my gallery for pics of the tail arrangement). This may prove tricky, heavy and fairly pointless however! Also be sure to mass balance the tail to kill any flutter, and aerodynamically balance it to save the servo from excessive load. All moving surfaces may seriously damage you're will to live! During experimentation i had several tail failures (including one where the whole thing kinda blew up!) and i reckon i hold some sort of British record for the number of successful tail-less landings - i've never lost one yet!!! I used an all moving tail in order to get silly amounts of pitch authority as the British nationals fun fly events include alot of quick looping. I certainly got it and its VERY twitchy on elevtor so i'm wondering if there is any point (save trim purposes) to you developing this?? Anyway, got to go to lectures.... - Martin