How to get my friend to go on Goliath?

ok so me and my friends are going to six flags and they want me to go on 5 rides that all go upside down! So i want them to go on Goliath and Daredevil and they said that they would go on Daredevil but not Goliath beacause they don't want to fall off. I have tried telling them they would not let ppl on it if it wasn't safe. I offered to sit on the outside. And they keep saying no. I want to go on the rides they want me to go on but still thats not fair that they want me to go 5 rides and I only want them to go on two and they will now only go on one!!!!!! Please do not say I am being rude to my friends but help me convince them to go on Goliath!