Install instructions for Utopia drivers backrest

[naga viper]

I chose the f6b over a wing for the reason to be able to throw a leg over it easily.
Will installing utopia backrest hinder that in any way?

[hiflyer]

I chose the f6b over a wing for the reason to be able to throw a leg over it easily.
Will installing utopia backrest hinder that in any way?

I like the other version you can buy because its not as tall. I installed a Utopia and thought it too tall, so I morphed a Harley pad onto it using the Utopia hardware. The utopia is just too tall for me. They really ought to offer different pad sizes. I forget the brand of the other backrest.