Just looking to get some reassurance I'm on the right track here for towing this boat. I'm picking it up Saturday with my 2011 suburban, never hauled with it yet. Guy measured 20" to top of trailer coupler leveled and I got around 23" to top of my hitch receiver. Accounting for ball height I'm thinking around a 6" drop for the ball mount. Does this sound reasonable? I don't have a ball mount with that much drop so I'm gonna have to buy one if so. Seems like a good amount of drop compared to towing with trucks in the past. Thanks for any advice.