Well, this happens every time there is an increase in house prices, it always stops, they always come down, etc, but if you sit it out they always go back up again, it might take a few years but they always do....
We are in the same situation, we sold late last year, (to buy said boat), we too have been lucky enough to be able to buy the boat outright, with monies made on the house sale.
Now the boat is nearing completion, and I have to now ring up the insurance company to insure the new boat, its going to be interesting to ask our boat builder what our new boat is now worth,(as the price's have gone up since they started the build back in Feb).
Personally, Im not bothered about whether its gone up or not, really, its a way of life Im buying into here anyway
Roll on, I say, cos I have to admit having spent 10 months in a 14foot caravan, caravanning aint for me! (not for this length of time anyway! ). Unlike the new boat, there just isn't anywhere to put anything in this caravan....