Rule 1. Never dump where you acquire your coins.
The TCFs by me use a hopper in the coin bin. I think it either counts 5k in denomination ir 5000 coins, then says it's full. I have 4 tcfs close by and rotate 3k in halves between 3 of them, every week. I try to rotate the one that I skip every week. The closest one to me sees me and about 1k - $1250 in halves every week. they've never said anything to me so far.
Sometimes I feel like I shouldn't be dumping so much at once, but then I look at the fees they charge non-members, then figure they wouldn't care if someone dumped 5k at that rate. I also always leave most of my dump money in my account there for awhile, in hopes it makes them happy that they can earn money off my money. Anyways, so far it's worked for me, hopefully there's something that you can use.
Also, I think TCF in my area uses Loomis