Hi Kevin, it's good to see you're still around.
I can't help you with finding a boat rental, they're less and less rentals available these days. I believe it's partly due to the high insurance rates the rental companies have to pay. The only one I know of is Disney Boat Rentals
I removed your duplicate post in the Clear Lake Catfish forum since we do not allow duplicate posting. I understand that you need all the exposure you can get but I just removed someone else's double post a few days ago so it would not be fair to allow yours to remain. I hope someone can help you out with this.