I'm honestly considering turning down a tinder hookup's advances tonight.
Why do you want to turn down their advances?
I would rather go watch a movie than hook up.
It is ok to turn down people if you don't want to have sex with them. You should tell them before so they don't wait around for something that is not going to happen.
I will go back with them another time for a hookup, then I will stop replying and ghost him.
You should give them some type of explanation for no longer wanting to see them. It's hurtful to leave someone wondering if you'll ever respond, especially after hooking up with them. They may retaliate by warning others not to bother with you.