you run, you're getting taken down bro. watch cops. junkies arent marathon runners! well maybe the methies...
still, unless its far off in the distance, taking off is bad.
if you encounter cops, bets course of action is to shove it in your ass before they see you. IF THEY DO SEE YOU, and you can AFFORD a LAWYER,SHUT THE FUCK UP until you see the lawyer. if you CANT AFFORD A LAWYER and you are caught red-handed, be nice as fuck and just admit to it. admitting to it right off the bat sounds like a bad idea, but if you're going down the best bet is to do it as cooperatively as possible to ensure them putting in a good word. contrary to belief, cops deal with soooo much that when they get someone red handed and the guy admits it he will get a better sentence then if he acts like just another hard ass. When i was busted red-handed for heroin I admitted to it and didnt even try to lie since I didn't have a lawyer. they ended up letting me go since I had a small amount. supposing you have a SMALL amount, for personal use, if you cooperate and are not on parole, have no priors, a non-violent offender, no warrant, etc etc it will be favorably in your outcome.
HOWEVER, if you got access to a good lawyer and not a state appointed SHITHEAD then don't say shit, shut the fuck up and wait.