Exactly what I was asking for.
It seems to be common wisdom that the tongue weight should be 10% to 15% of the trailer's weight. We know that it's 10% when the trailer's unloaded, as mentioned above from one of the dealers: trailer weight 2250 lbs and again that quote "225lb plus cargo".
What I have no concept of, is how much the balance is going to change as you load it up. For some of the weight it'll be the same for everyone - the water tank doesn't move (but is it forward, aft or inline with the wheels?) - and then everyone will have their own personal stuff. Do people tend to add more of their personal load forward or aft? Does the 2250 include the fridge and batteries which are well forward?
It could be easy to exceed the 350 lbs tongue weight rating even with a trailer weight well under the same towing vehicle's 3500 lbs rating, even before you start talking about adding 80-100 lbs of bikes and bike rack over the fridge box as was being discussed a couple of posts up the thread.
So I know it's different for everyone but I was just hoping someone knows their weights and can offer some data points, that's all.