The daytime heat noticeable abated during our regular Monday night MTB ride. Thanks to Jeff, Trish, and Roger for joining me.
Finally figured (sort of) what I've been doing wrong with the GoPro camera. Turns out, my SD card was not rated "high" enough - whatever that means - to take video. I stuck to picture mode this week, however, I've got a new SD card and will try to figure everything out to grab some video next week.
Bonus: I'll be able to ride with BOTH hands on the bars! Should cut down on the number of crashes...