The best free flight safety advice is over 20 years old. Why Can't We Get A Handle On this Safety Thing
If you have an incident strongly consider posting up in the forum. We will actively moderate safety posts to maintain a collaborative environment.
If you are uncomfortable posting in the forum please contact your site representative, or someone on the safety committee. (Ben Devoti Ed Williams Tavo Gutierrez)
And as a USHPA member File a report
Most of the time thermals are the primary source of lift at RMHPA sites. A typical good day looks like: