Mark waves after his solo trip down the run. It was kind of awkward to have to ride alone/without any friends when we did the solo ride/parent swap thing and I was interested to notice how I bonded with/chatted with whichever strangers I ended up stuck with as a seat-filler. I realized after laughing and chatting about how splashed I got, that to them, I was a random, weird stranger horning in on their family’s raft! (though, later they rode past me and waved and yelled hi with genuine smiles like were really were good pals.)