Just a word of caution to you potential users and shippers out there. The weight of a boat as listed by the manufacturer is not necessarily what the boat really weighs.
My boat had fuel, heavier engines, options galore and of course 17 years of stuff. Not to mention, it probably had some water here and there in cockpit cushions, the bilge, and who knows what else. Basically, it weighed over 5000 lbs more than the manufacturers listed weight. While the shipper was able to handle the extra weight on his trailer (thanks Phil) it was close and could have easily gone the other way if he had a smaller trailer.
Fuel adds a lot of weight and it's tough to get rid of once the boat is out of the water. The shipper can't use it in their truck as it's not road-taxed (big fine) and of unknown quality anyway. Water is easier, but waste tank gets a little tricky.
I would suggest having a boat hauled at a yard that can tell you how much your boat REALLY weighs BEFORE listing the weight on U-ship. That way you get a shipper who is prepared for what the boat actually weighs. Or try adding 20-40% to the "dry" weight to be safe.