If you're restricted to a certain number of casinos in a given area, I also find it helpful knowing the schedules of the dealers and floor personnel (and if possible, surveillance). This information is obtainable if done correctly.

IMO, a level 1 count, such as HiLo utilizing the 18+4 indices, is just fine as it does not 'wear you out' as much as a slightly more complicated level 2 count. Keeping a good act is a must - no matter where you are. Looking and talking like a ploppy can go a long way, and if you're restricted to a few casinos, longevity should be high on your priority list. Floor personnel and dealers enjoy having friendly, courteous, and 'dumb' players at the tables.