I have shot many outdoor 3d shoots as a family, but this will be my first indoor 3d. I will be shooting my clubs league. It is pretty informal, and shoot what you brung. (More less a bunch of people having a good time and getting out of the house during a WI/MN winter). Just looking for advise on line etiquette and such. Their will probably be around 12-15 shooters at the line at a time. I just don't want to be that guy! Any suggestions please throw them out there.