Today I got around to determining our 17A tongue weight for the first time, and it was a surprise.
tongue weighing 001.jpg
First, I constructed a poor-man's scale by using a 4x4 and the wife's deluxe bathroom scale (properly protected with a soft piece of cedar). the 4x4 is 36" long, and the trailer tongue foot is exactly in the center. The tongue weight is equally distributed to each end of the 4x4, so, whatever the scale reads, I just double to get the tongue weight.
I have just refilled the propane tanks (that's 70 lbs. total-tanks and propane), and the fresh water tank is full (20 gal.: 160+ lbs. behind the axle). I have 42 lbs. of stuff in the front storage box, with only a small amount of personal gear in the trailer.
So, essentially how it was when I picked it up in Sumas is how it sits: 492 lbs. on the tongue. Wow. I've got some work to do to get that weight down. Maybe I'll put a 500 lb. gorilla on the rear bumper.