Just my two bits . . . any crutch you use like stickies on the fretboard . . . just have to be unlearned when you remove the stickies . . . then u gotta worry about getting the glue off. In the time that you spend making the crutch, you can rote memorize. As far as the Am pentatonic scale pattern is good to memorize, then its just a matter of moving higher or lower to do Bm pentatonic, then Cm pentatonic and so on. Remember 10,000 repetitions will embed any pattern in muscle memory, and you can do 10,000 repetititions of almost anything inside of 3 hours or so. It seems like a lot, but any accomplished guitarist will agree that nothing replaces repetition and memorization.
Ok, I'm no master, but I can't stress repetition, repetition, repetition, like going from string to string and name the note of each position. I make time while watching television to do this exercise. Oh well, for what it is worth!