Spinning an AA1 is a Very BAD IDEA...Here's why:
AA1 was originally a very innovative kit built aircraft (a la RV series) designed by Jim Bede as the BD-1.
One innovatinve component was the wing spar - an aluminum tube extending out to the end of the wing.
The ends of the tube are capped off and sealed creating a fuel tank.
In a spin, guess where the fuel goes? ... centrfugal force forces the fuel out to the end of the wing which
a. creates a counterweight that aggaravates the spin and worse...
b. could starve the engine for fuel so you would not have any power to stop the spin.
Another factor is that the AA! is very short coupled and the rudder may not be very effective to counter the spin as it accelerates .
Tell your friend that the AA1 is placarded "Spins Prohibited" for a very good reason (or two)