Matt, I have flown all the major soaring sites in the West for over 40 years and it is my considered opinion that you can't beat the Sierras in the summer, July being the best. Air Sailing Sports Regional Championships has been the most consistently GOOD flying I have seen, year after year with speeds in the 80's or higher and 3 hour average tasking. See you there and anyone else who would like to experience the Sierras at its best!
JJ