The person at greatest risk is likely the guy on the foredeck hoisting the sail and setting the pole. He is pretty easy to knock over board or hit with the spin pole. He should be careful.
The gear risk is getting the sheets in the screw. Make sure the sheets are under control all the time.
Make sure you have lots of sea room for your first hoist just in case it takes a while for you to get it down.
Really there is nothing to flying a spin in reasonable winds. Two corners are supported by poles (The head and one clew) and you sheet with the other clew. Square it off to the wind and go for it! It will eventually be your favourite sail, guaranteed!
There is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries.
Shakespeare, Julius Caesar IV, iii, 217