1.) Dont wait, in our guild we help out the beater. Takes from 10 to 30 seconds. Back off when there is a sliver left and you are all set.
2.) If you have drama cause of the dummy buff, you are going to have drama in your guild reguardless if the dummy trainer is on your ship or not. A minor thing like that is not something to get worked up over. If you do, then there are bigger issues.
3.)See point 1. If they dont wanna spend the time doing it, they wont.
Its a fun thing to test stuff out on, play with, and is in general then a random stone head that gives me +1 to something. Fits in better with the D&D setting