I do know that some Thailand breeders keep there males in large community tanks. By large, I mean REALLY big. Possibly 200 plus Gallons. Of course, this is a huge risk. I do know some males will live quite companionably with females, but then you also run the risk of them breeding. The safest bet is to probably have some Wild's or Strohi in there.
Mulan: Blue/Green/Red HM Male
Those who now swim in the Rainbow Ponds:
Spike: VT Purple Male
Glaedr: CT Yellow Male
Ezio: DeT Dragonscale Male
Stu (Founder of the obsession): CT Blue Male