couple of thoughts...
This is not the best subject for public info, but a couple of comments.
There are ways to get comps without playing using your _real_ name. Swap player's cards with a friend that doesn't play BJ. If you get him backed off, he won't care. :)
Playing at a "low level" (as I generally do) doesn't cause problems if you just sit down and play. If you start tossing green at some places, or blacks anywhere, they will start to wonder if you don't want to be rated... And that attracts more "interest" from them.
I do a little of both. Depends on the situation...
But I will say this, that 90% of my "problems" were always on the next session following a session where I used a player's card. One rather amusing case was where I used a family member's card to play, next time _he_ tried to play they were "waiting". :) Called me and asked "what in hell did you do when you were in there, start a riot or something?" :)