Hey Mark,
I hope you arrived back home safe and sound. I’m just waiting for check-in and want to give you my experience with this summit I just activated moments ago.
Your vertical antenna would have been the best solution. I used my compromised vertical (see Short loaded vertical antenna for restricted summits - #8 by HB9EAJ) and made 34 contacts, mostly on 10m and several S2S.
I put up my antenna at the same spot where the guy in the red shirt in your picture is taking a picture.
Some QRM on 15m and below, due to the solar panels in the cage, but 10m was fine.
73 Stephan