Where are you playing?
Since you have a small bankroll, you base bet is probably small. If you are playing on the strip, you can probably play for hours without anybody caring. You don't need cover. Ian Andersen's advice is for people playing at much higher levels.
If you are playing downtown or elsewhere, you might have to worry a little about not being detected. However, unless you are playing there daily, I wouldn't worry about it. The only thing I might consider doing if I were you is to rathole chips so your wins don't appear too big.
I recently played several hours at a casino with a huge reputation for being sweaty. Nobody cared.
In your first post, you mentioned issues such as leaving money on the table or leaving before you lose money. Remove these issues from your mind. You make money by playing not by leaving. Sure, you will have ups and downs, but in the long run your expected value = advantage times amount bet. The more you play, the more you bet, hence the more you expect to win.