Quoted from Luckydogg420:What ever happened to putting a quarter on the machine to let the player know your next? We did this a lot as teens in the 90's
This worked the best ...everyone played one game at a time or if you had buddies with you then multiple player games and you put your quarter down on the glass and if there was 5 down already then you knew there were 4 people in front of you. If a person got a free game then that would over rank the quarter or the person could take a quarter and leave his credit.
Same concept with pool put your loonie down and one game at a time but winner could hold the table for next in line but usually you just asked if thats what was happening or if you wanted to have a game with your buddy only the winner would step down and let you play with your buddy.