What if you hire some sherpas to haul it to the water?
Do you have a riding lawnmower?
If so you can easily rig an attachment point for the bow.
With the $10 transom wheels the boat will travel upside down.
A heavy duty angle bracket sticking out from the rear of the mower can support the bow via a length of rope and a carabiner.
You will be going slow enough for this to work IF you take the corners at dead slow.
If you awaken the local constabulary, plead ignorance and promise to rehabilitate yourself!