Patrick, Your points are valid and technically accurate. Please don't let my comments sound snooty because I have to tell you that I come from the school of "If It Works Do It". Unfortunately in our current culture today of 'No Risk', 'Liability Conscious' Ambulance Chasers your method will keep you out of more trouble. In 2008 I bought a brand new Nissan Titan Pick-up Truck. Towed anything I wanted, especially my 19 foot Bass Boat around most of the NE States. Unfortunately I really wasn't a 'Pick-up Man'. So I traded it in for the 1st Year, 2008 Nissan Pathfinder V8. Same engine and trans as the Titan Pick-up truck but with IRS. Tow rating is 7000lbs and the Manufactures stated tongue weight capacity is 700 lbs. PreWired for 7 pin trailer jack with brakes. If that doesn't keep the Feds off my back I'll go drive it off a cliff. Previous to that, I towed my bass boat, a 19' StingRay day cruiser and a car-hauler trailer with an MG Midget on it with a 1994 Chevy, S-10 Blazer. I built the rear leaf springs up for the Blazer and it was strong and stable. No body ever bothered me about tongue weight or any weight. It worked beautifully, like I said if it works do it. There are too many Arm Chair technocrates writing specification by committee. Unfortunately eventually they will win the day. Just like in our courts and in our politics. Hopefully not be before I'm done with my toys. When they win, as they are now, we can all sit down with our I-phones an tell ourselves how exciting our day was. Bye the way, you can adjust the tongue weight by repositioning the load front to back or back to front. Ya know how you tell if your tongue weight is right, when the trailer tongue stops bouncing and trying to jerk the hitch off the back of the vehicle. I took the Midget to Boston one time. The Midget was too narrow to go on the open track trailer that I had at the time. So I bought 4 sheets of 1/2" plywood and toggle bolted the plywood to the tracks of the trailer. Drove the Midget straight up on it strapped it down and towed for 8 hours at 70 to 75 miles per hour. No problem. I left the Midget in Boston and started back with an empty trailer. Got out on the interstate and the trailer tongue was bouncing like crazy trying to tear the hitch off the back of the Blazer. Pulled over, unbolted 3 of the 4 sheets of plywood and stacked all 4 sheets up near the front of the trailer. No more bounce, smooth as pie all the way home. Like I said, If it works.... of course pay a little attention to physics. Dave.