The trailer I'm looking at has an unloaded tongue weight of 390 lbs. I'm figuring about 150 lbs will be added in propane and a battery. Does the crap I throw in the back of the truck count as well or is it just count or is it just the weight on the ball? I'm pretty sure the answer is no it doesn't count but wanted to be sure. As a side note, don't think it matters but i've got a WD hitch that I use on my current trailer and firestone air bags but am contemplating wheeler progressive aal's.