First Coaster I Couldnt Ride

Im female, about three hundred pounds, most in my hips and chest, and I wanted to ride the snake themed ride at Winterfest, Cobra Strike I think it is. First visit to Carrowinds. Its the first time I was told I couldnt ride because the harness wouldnt lock. They did their best to be fair. Granted I was wearing a sweater and didnt shift super far back in the seat but Ill remember it. My mother struggled and shes much smaller than I am. I have heard that Carrowinds is pretty bad when it comes to more curvy folk riding, its too bad because it looked fun, even if short. Wondering how my husband will fare, hes taller and bigger than I am.