Anyone know a reliable way to have RBN spot you during an activation? My activations are almost always CW.

Most of the POTA I do is during SOTA activationd, and there is not always cell service. And trying while camping in parks is even worse. SOTAwatch has RBNHole which is very reliable if you've put up an alert beforehand. I've been told there is something similar for POTA/WWFF, but it's never worked for me.