Look up skyzone. I know there is a few in the cities for sure. The rates are decent, it's like 12 bucks for an hour or something, so not bad for a bunch of tramps and a foam pit. Plus, you're usually dead tired if you jump the whole hour.
Only shitty part is that I think they yell at you for doing dubs.
But if you want better quality tramps, I would google where the closest gymnastics center is. Usually they have some pretty good tramps and I know the gym where I live has open gym on some days.
Skyzone is the shit, they have a deal now where you can go 8-11pm Saturdays for $15- and it's 15+ so no little kids that you might land on accidentally.
the way they make a whole floor of trampolines is by having a bunch of little squares of trampolines all next to eachother. At the skyzone I went to, the squares were all really small, and it was easy to come down on the padding between tramps.
I asked an employee and he said they're bigger at other skyones.
If you talk to the workers and show them you're capable of doing dubs they'll let you. Not sure if they'd let you do them on the tramps themselves but they always let me do them from the tramp into the pit. But that's only if the workers are chill which most are.
Like other people said gymnastics gyms are good and depending on the gym they might spot you on tricks or help you out instead of you just throwing shit without knowing what you're doing.
A little out of your area, but I went to flight zone in West Hartford and they had normal sized tramps, sweet wall tramps, and some quality foam pits. Usually the dudes there were to busy with dodgeball so I could throw dubs with no problems.