Other option is to get the little lady a new small car to hoon around in....
Then get an old Toyota or Nissan to tow the boat to the ramp... if your not doing a lot of KM in the tow vehicle then you wouldn't need something to do both, and you would have an extra vehicle if needed..
Sure you have an extra Rego and insurance but you will save heaps on Fuel and the benefits are there also..
Cheers
Brett