theabortionatortip: Never assume it's cool to smoke just because other people are. This goes double for indoor venues. Also the smaller in size the sketchier.
Get into the midde of the crowd. Crouch down a bit if it's good visibility especially if you're tall. If it's sketch ghost your hit or blow them down or in your shirt. A puff of smoke coming up signals security to sweep through. Some venues have cops inside them, sometimes the cops even pose as security at the door and inside the venue.
Def choose our weapon based on the venue. Joints and blunts are always good so you don't have anything to loose or break. For a bowl it's not a ad idea to grab somethng cheap just for the purpose. One hitter bats are perfect for yourself. If you're with friends something small with a big bowl. If you see yellow shirts moving toward you pass that shit or put it away and deny anything to do with droogz.
Unfortunately these days it's not even old people running venues "who just don't get it" but the constant threat of being shut down. If cops want a place shut down they can make it happen. If a place is known for being friendly to the droogz it puts them on the radar and thats no bueno.
IF the venue's are real sketch try the bathroom stalls. Def check the venue though as some places IE house of blues venues will have security checking over the stalls. As fucked as that sounds it's happened. Or even the more standard looking at which way your feet are. That's more for other stuff though.
For the greenz just do it guerilla style. Light up, puff that shit like it's going out of style and get the fuck out of there. If you pass security running in to investigate, tell them how they need to stop the dirty stoners from ruining your pooping experience.
Or just get into meth, it's a lot easier to do on the fly.