* I placed two heavy bikes on top of the camper in the garage to simulate a fully loaded camper. This didn't change the tongue weight measurement at all initially, but I put them on when the camper wasn't level and tipped back. Leveling the camper made a big difference in tongue weight, as all the weight leans forward on the tongue.
* I also added 20 lbs of weight above one of my propane tanks that was empty, to simulate when it was full
* I also, later added a large bag of blackdirt to the top of the camper above where we place baggage inside the door of the camper, to simulate a fully loaded condition.