I have the BRP backrest and I put a child car seat on the spyder and secured it with the seat belts to the backrest and the handlebars for the passenger. (2 separate belts that come with the seat).The third seat belt goes across the seat like standard seat belt in car and i strapped it to metal frame down below. It's very secure! Does anybody think putting a 14 month old or 3 year old on that seat is a bad idea? What if child wears helmet? If you're against this idea please don't yell at me I'm JUST EXPLORING at this point!!!! Just wanna hear folks' thoughts about it. I think it's reasonable but wife says No.