However, with the time available I can do everything that remains to be done before the flip.
When upside down the boat will need to rest on a support of some kind at bow and stern, and the supports will need to be on wheels to allow the boat to be moved.
After some experimentation and measurement I devised this cradle for the bow.
It is actually a dolly rather than a cradle, made from cheap studding timber and fitted with braked casters.
And here are both dollies outside.
The stern dolly is 72" wide and will need to be chocked up to 17".
They were set aside to await deployment when feasible.
I will need to find a way of providing a flat surface on the driveway to roll the boat out of the garage. The driveway is coarse gravel and impossible to navigate for anything with small wheels.
But it's good to know that the dollies are ready and waiting!