I'd love to see one of those charity lotteries for this, in a couple of years they might be able to afford an outboard for a RHIB.
Martin Clunes can do the voice over for the ad (with the sad piano music in the background), "Poor Liz hasn't been the same since she was cruelly robbed of her yacht, please help with whatever you can to put a smile on poor Liz's face, just give whatever you can".
In the incredibly unlikely event that this is given the time of day in parliament it will be slapped down, even the Tories aren't that mad, if by some miracle it did become policy I'm all for it, if there are enough royalists out there who want to fund it, crack on. Although they might need to sign up to the continued maintenance long after their deaths.