renee...you know how they don't sit still? It's a PP technique where you put them in your hand, actually holding them...as they try to get away you just put your other hand in their way, so they are bacically crawling thru the "tunnels" that are your hands...you keep doing it...in one hand, out the other. It's supposed to get them used to your touch. Which it does but the OP is afraid his/her father is making the "tunnel" too restrictive.
Fact is, while they are sleeping in their bonding pouch or in your shirt, you can gently pet them. This helps them get used to your touch as well.
During play time...in the tent or other glider safe area...they will jump on you and you can pet them. I always do. They climb up the front of my shirt and I do the same thing your father is doing but with my open hand. They climb & I take both hands...one & then the other and pet, pet, pet, them. Gently pushing them into my front as they make their way up to my shoulder, then I give them a rubbing behind their ears once they have made it to their destination. Maybe get him to try that. You can be firm AND gentle...that's what you're going for. But explain to him that if he is actually being too rough...he will move the bonding process back. They won't want him to touch them or pet him.
You want them to enjoy the human touch, not be afraid of it. I know you know that, but explain it to him. Or let him read these comments...that way it's not you saying it, it's advice you got from the forum.
