@W9SSN Yah, our vent pipe is ABS. I have a few other antennas around & near the roof (2m/70cm vertical, 10m vertical, 6m halo, long wire, & a hexbeam) and they all have grounds.
I have a patch panel in the shack with quick connect PL-259s that I pull out when not in the shack or whenever I get a lightning alert on my phone or computer.
Also have a ground bar in the shack that goes outside to ground.
I may just wait out the storms & reconnect after they pass.
It’s only Field Day.
Safety 1st.