Yes I have. On our family winter skiing holidays we’ve rented a sitski and my son and sons in law have stood on their skis behind it to steer and taken me down the slopes. Hope I can do it again this coming winter. I’ve been on a jetski with DH several times. I sit in front of him and he makes sure I don’t fall off. But we do always wear a life jacket. Both are such great fun
I did moguls once. Did I intend to do them? Hell to the no !!! I got going down the wrong slope and by the time I realized I was in serious trouble, it was too late. I think the only thing that saved me was that it was heavily snowing wet snow and my goggles were covered. I couldn't see well and hit those mounds "blind". If I had seem them coming, I probably would have frozen up and crashed. As it was, I got to the bottom of the run unscathed, physically at least. Mentally, I was screaming in my head.