we have two 'spot dots' at the roadhouse I work at. I'd never used one before I started working there, and it is helpful to find someone in dim light before you turn it on, or to follow someone when there's tons of light on
stage.... However-
The spot dots we have are tiny little tubes, difficult to look through if you aren't used to it, the light is not very bright, and the batteries run down often because it's very easy to think you have the
switch all the way off when it is really still on. Ours have magnets on them, but you still have to tape the heck out of em to get em to stay. They often move after you have them sighted in. All in all, I don't like them. The
disclaimer on this is that I'm not sure we really have the 'spot dot' you all are refering to....
The Telrads have come through with a few different touring shows. They are MUCH easier for new spot ops to learn with, have a bigger target area, brighter light, and very simple to sight in. They are bigger and therefore don't move as easily after you sight them in- if they do, they are much simpler to re-adjust

There's my two cents
