Tis one of the tactics I use - run the other way, reverse psychology, making it his job to keep tabs on you, rather than him being confident you'll find him and let him know what he needs to know.
Just one caveat - for dogs with anxiety... be mindful of that. Its one of those common sense things really - letting him know by making a silly noise and running the other way... great.
Waiting til he isn't looking and hiding and having him panic... not great.
Vary your reinforcers -not just in terms of value, but type and delivery. So straight up handing over cheese direct to face every time will be fine for the unimaginative dimwit types..
For the smart arse warp factor 7 thinkers.., not so. So throw it, roll it, scatter it, run whilst scattering it, put it in a toy (kong clamshell, I think Tug E Nuff do their own version too) and lob that...
Don't be his vending machine he can put off using until he's done with whatever bat eared business he's got going on...
Be his irresistible fruit machine!