PT - I could usually spot a roadrunner from a few different criteria. Never brought a cue in, initially. Always sat off to the side somewhere with a coffee or coke and just watched. Never said much. Now, those things were not always apparent but for the most part they were.
I use to loosen up some rooms when questioned about my intentions.
I would tell them that I wasn't no Lear jet player flyin' around the country with 4 stakehorses,
a personal chef, and a valet.....but I would bet my money and pay cash....
...gotta bet my own 'cause no one was groggy enough to back me.
Many places liked that and we got it on...helped that I usually had fun when I gambled.