For what it's worth, Our triple axle featherlite weighs 6200 lbs. empty. I don't have a lift inside, but we do have some attic space for carpet rolls and misc. small items. I can weigh the tongue in our shop with a store bought hydraulic scale. I simply place the scale on a floor jack under the ball socket of the trailer and adjust the tongue height to correspond with the same amount as it is when hooked to the bus. This scale gives a very precise reading within 50 lbs. When empty and on level ground in the shop, the trailer has a tongue weight of 750. When loaded with the vette to the extreme rear, the golf cart or the harley sideways and just ahead of the car, the tongue weight is at 1280-1300 lbs. We do have the Prevost hitch at 20,000 lbs. and all three axles have brakes. I can actually stop quicker when loaded. Hills on interstates in Texas, New Mexico or Colorado are not a problem as long as you down shift and keep an eye on temps. in the transmission...both up hill and especially down with the retarder. Although we are 73' long overall, I have never [ to date ], had any issues with the fellows in the smokey bear hats. Just keep a low profile if possible! We do have two friends with H45 units towing triple axle 29' ers with stackers. They both have to load as much as possible in the rear and still have tongue weights in the 2000-2400 range... too much for this country boy!!!