I'd say so
Here we definately do (in Oz)
Slightly off topic, but I also fly Cessna's, when I take folks for a joyflight, they aren't even allowed to contribute to fuel/rental of the aircraft
How do I get around it? I take them for free, but they have to pay for a photo of them standing in front of the aircraft.... That I charge for.... strangely enough, the cost of the pic is about what the fuel/rental would have cost.... funny that, and some folks dont even come back for the pic??
At least I didn't charge them for the flight, hehehehe, nudge, nudge... wink, wink
You can take whatever meaning you want from that info .....
In your situation tho, you have to remember.... If someone you are 'instructing' for a fee, accidently shoots themself, someone else.... or you
Someone will be wanting to sue someone..... more than likely you
So, If I were you, I would look long and hard at the actual laws in your state, before risking what you are thinking of..... Different if you just want a little cash to cover ammo..... (sell them a pic of them with a gun) but if you do it like a business.... insurance is your friend
& I dont think anyone would insure you in your venture unless you held the appropriate 'official' qualifications
Beware