It was around $300 for 8 hours on the pontoon boat with full bimini top cover from Lagoon Pontoons - this was the "deluxe 90 HP". This was last November (2020) over the week of Thanksgiving. If you rent the pontoon boat with 60 HP motor or 90HP with half cover it is a little less costly. These all seat up to 12 passengers per their website lagoonpontoon.com/ Rental includes a full tank of gas (some places charge you to refill the tank but this place didn't when we rented it). They also have double decker pontoon boats with slides.
Here is the link to the vrbo (I tend to use Air Bnb and Vrbo interchangeably): www.vrbo.com/1878568?noDates=true&unitId=2441079 We stayed there at the end of November over the week of Thanksgiving and it was quite nice weather wise. There were some nights when it did get cool. Google weather says the average highs are 72 and average lows are 54. Have fun in Panama City Beach!
It was actually VRBO (I tend to use Air Bnb & VRBO interchangeably ... sorry about that). The house is called Pier Park Paradise and is located across from Dusty's Oyster Bar on Front Beach Road and is just down the street from Pier Park. It's pretty nice but pricey unless you have a few families to share in the cost. Good luck!