My thoughts:
First Don is exactly right, as he often is. If you are spreading $25-$300 on SD, DD and shoe games, well...that just doesn't make sense. That kind of spread, even at those low, mid-level stakes is going to get you banned at almost every SD and DD game. That kind of spread is better tolerated at 6 deck, but that too is dependent on a few thing, like how long your sessions are, how you are ramping your spread (big jumps), how often you are playing the same places.
I play similar stakes, $400 max bet at most place, but $300 at some of the smaller places, so pretty similar. I play 250+ days a year and get minimal backoffs. maybe 5 a year and in recent years more have come on road trips, than my regular rotation. This is because I have made longevity my top priority. I have tailored a plan for that priority. The 3 basic elements are short sessions, fairly big rotation of about 30 stores, and identifying betting level that are tolerated, at least for the short sessions that I play.
Now of course everyone doesn't have 30 local games. I didn't either...I specifically moved to a location that offered that. because if you are playing the same few casinos over and over, seeing the same faces, you aren't going to last long anywhere, playing more than red chip level.
I am guessing you do the complete opposite of 2 of my 3 rules. Play the same few casinos over and over and play long sessions. Long sessions means pit and surveillance will have ample opportunity to evaluate your game. They will see your spread multiple times, including the biggest tell of retreating back to minimum wager at the start of a new shuffle, which is a big no-no for anyone concerned about longevity.
First, as Zengrifter often says, you set your spread from max bet backward. So at DD your max would be $300, but you don't have to play $25 min, which is 1-12 and way too telling for DD. Instead play $50-$300 which is 1-6 and better tolerated. And I am going to share a little tip that I use, that really makes a big difference in my DD play and longevity. Spread both ways! You can afford to do this at DD (and SD), you can't at shoe game.
In other words, when you sit down, don't play your min bet of $50, play $75 or $100. If the count starts to rise as it can quickly do at DD, you will only be showing a spread of $100-$300, which is 1-3. If the count goes negative drop down to your min wager of $50. Then at the shuffle go back to $100. Usually you won't be betting $50 (negative count) and your max of $300 in the same shoe, or time through the cards. Occasionally it happens, but it's rare. So to see you full spread, they have to watch through several different shuffle and put it all together, rather than just one time through the cards. I, personally don't play long enough for that to happen. It's kind of a simple tactic, but you would be surprised how effective it is.
