Where is Charlie Nixon? Accelerated spins in a 172.

1) Where is Charlie Nixon? He is an old flying buddie. Former Navy
F6F pilot, Airline and NASA Exec. Lived in DC area. We are QB
members. He was my sponsor. I moved to Houston TX and still have his
landing gear from a 1947 Bonanza he owned. I want to give him his
gear.

2) About spins: I am new at flying a 172. 25 hours. Owned two Pitts
Specials but never a 172. Only have 25 hours in a 172... My question:
In a 172, can a spin be accelerated (made to spin faster) by a)
starting the spin with full rudder and full back stick elevator and
then b) once the spin gets going, then moving the stick to half back,
not full back? Anybody tried it in a 172? Any problems? Just
curious.