I've been riding now for years, but haven't had too many times where I've had a passenger in the back of my bike. I took my girlfriend out for a ride last week and all beit a short ride one complaint she had was she wasn't sure how to hold on. If she grabbed around my waist titely then on stops her helmut would bang up against mine. When she pulled away then when I accelarated she felt like she was going to fall off. That was her first time as a passenger on a bike so she's not sure what to do and I'm not exactly sure what to tell her. Any tips out there? Just to clarify, my bike is a Yamaha R6.