Sorry for the delay on this:
I can't stick it to one size or the other.....I wish I could, but the trailer tows incredibly well with the current tongue, but the current tongue is so short that with tight turns, the sides of the platform can actually go under the edges of the bed on the truck. Therefore, anything on the corners of the platform would get crushed unfortunately.
You guys have some really good ideas here, some of which I've already tried and some I hadn't thought about, but I haven't had any success and I figure airbags are the next approach. My current issue is just that I haven't found airbags that seem appropriately small enough.....
My plan with the bags was merely to have two valves and a gauge- one valve filled the bags off trailer air and the other dumped the pressure. The gauge was in between so I could see the pressure in the bags. Simple enough.