I'm actually in St. Pete, about 45-50 min south of Tarpon.
KJFlorida in Clearwater would be about 20-30 minutes, depending on if the show's near the beach or not. Melbourne is the other side of the state
I know there are 2-3 other KJs on this board in the Ocala/Gainesville area as well, which are about 45-60 minutes NE of Tarpon as well. Stogie is in the St. Pete/Clearwater area (I've met him a few times), but I think he's still doing a one-man show, not a regular karaoke gig.
I have a good buddy in Tarpon, so I end up there sometimes. We went to a karaoke show at a place called Lagerheads a few weeks ago that was a pretty good show. Not a huge place, but on a waterfront canal with lots of gators, I think they do Wednesday and Thursday nights.
If you want to come down to St. Pete, I do Wednesdays and Saturdays, 9:00-2:00, just PM me for directions. Fair warning, I do a hybrid DJ/karaoke show, and work in a smoking bar, which I know isn't for everyone, but if you want your face rocked off with Top 40 dance and karoake, it's a good time
If you want to sing 10 times and wear the same jeans the next day without having to fumigate them, my show probably isn't for you.
If you just want to hit a show in Tarpon there are probably 25 others closer to you. US-19 that runs right through Tarpon is a commercial highway with a junkton of bars and restaurants. I can ask my friends up that way for a few suggestions for something closer, just let me know the details of where you will be located and what nights you want to go out.