A good idea:

Keep a list of every sleek spot you've had yourself or SEEN someone get theirs from. Call it the "verified" list.

Keep a second list of all the places you think are good bets or you've heard rumors about and check that once you've exhausted your verified list.

The real disconnect is that between the people who check 200+ spots because they have to (for a while) and the people who irrefutably claim to know 200+ verified, honest-to-god sleek spots and you must now praise their godly game knowledge! Sarcasm aside.