Do you remember “King of the Mountain” where you fought to get to the top and again to stay there? Well, this is almost the same. Using your battle stick, you must fend off your opponent while making him or her fall off the pedestal and onto the mat below. Rock Rental charges 5% for credit card payments, no additional charge if paid by cash or check. Rock Rental's delivery fee is based on $2.00 per mile round trip without a trailer and the travel fee for 1 vehicle towing a trailer is $2.50 per mile one round trip from El Cajon with a zip code of 92021. If the location does not have a power source within 100 feet of the back of the unit, you will need to add a generator to your reservation.