Rich, a cheap solution is a Jupiter-8 (42mm slip-on) plastic hood from an e-bay seller like alex-photo.
I got one, for a few bucks, it's functional. Be sure to get the round version though.
The focus wheel should be easy to turn; if it is a pain meaning it hurts your finger, the focus helicoid should be cleaned.
But i do prefer focusing by the lens barrel, since the wheel is much slower because of the gear ratio.