After having read horror stories about frags "flying away" while applying pressure to an ORA plug to cut it, I only use a Dremmel equipped with a diamond blade like
that one
I hate the look of plugs, so I do the following:
- If it is a softy: easy enough, take a knife and snap the glue between the glue and the plug
- If it is a non encrusted SPS: cut in the glue
- If it is an encrusted SPS: cut as much as possible.
After that, for softies I use cyanocrylate (krazy glue), for SPS: cyanocrylate and 2-part epoxy.
With regards to colonies versus frags. I was looking at my tank today and was pondering on growth. Pretty easy to figure out since Sandy was a "reset" and I restocked mostly at or around the fall frag swap. Well... even for slow growing corals like "strawberry shortcake" I am now seeing really nice new branches. Acroporas especially will spend a couple of months not doing much but encrust. But once encrusted, the branching starts and it becomes a mini-colony.
Even if you buy a mini colony, it will have to go through that encrusting phase. Is it worth the wait? I believe so, and I never had any plugs in my tanks, except when I am fragging!