I have these on my Super Glide Custom. They are incredibly comfortable for long rides.

http://www.harley-davidson.com/store/mini-footboard-kit

 

I just put these on my bike https://www.denniskirk.com/ribbed-fl...prd/497000.sku and took a ride down to Delaware yesterday(350mi round trip).

I cannot recommend these enough. My whole ride was changed. Between my new Mustang seat and the floor boards, I was comfy the whole time. I almost made the mistake of trading my FB in for a new RK but all I needed were these two things to make my bike perfect.