I've pulled a 6 X 12 trailer with a load (not sure how much) but just moving stuff around our firehouse lot. Sounds like your hitting the max, according to the sticker on the receiver hitch it's rated at 150 lb hitch weight and 1500 lb towing. I'm sure the manufactures test to a higher rating than they put on the warning label. Slow speeds and flat ground I don't think braking would be a problem. Looks like the axle is in the center of the trailer, if the kids shift to the back it could make the rear end light (teenagers in the back will probably offset that).
I plan on the firehouse to sit on the rear of the trailer crossways with the rocking chairs in front of it.. that would make the weight past the wheels of the trailer therefore taking some of the tounge weight off wouldnt it?
don't know the tung weight , but you might be way low on rear spring capacity in stock form
I would guess the weight of the firehouse and two adult women plus kiddies to be around 600lbs give or take 50 lbs.. and the firehouse will be past the wheels of the trailer away from the tonnge,,
I have hauled my 24' pontoon boat with mine and also haul my 18' 8000lb car trailer with mine. low is best. no problems
I'd get rid of the rocking chairs or strap them down, the Prowler is not the smoothest machine to accelerate slowly and you most likely will be starting and stopping several times if it's like any other parade.
This is a consern of mine also,,I need help on this one maybe as rocking chairs need to rock,,for voting points for ribbons we hope to get..
I'd put a load on that trailer and do a lot of practicing taking off and stopping, I'd also get rid of the seats and passengers in the rear with the load you're putting on the trailer.
My thoughts on this was that a heavier load would help because accelerating would be slower taking off than if you had a light load that could make you jump start.. work maybe like a slipping clutch,,thats a theory of course frm my days of driving old trucks with small engines and heavy loads of hay..I wll try and find a level place load somethiing on and test run it ,,good idea you got..
Low ranges as others have said
Yes ,like dessertrat says low is better and for sure that will be the gear I'll use,,
Another question is the Prowler tires does not give a pressure amountin the manual ,, I suppose due to what terrain one drives in ,,but what about on asphalt and cement pulling this trailer,, say 25 lbs each tire or what do you think?