FYI, ExpertFlyer is showing 2 Business Class seats on quite a number of days in August
For LAX to PPT - TN 7 : August 12, 13, 15, 16, 17, 19, 20, 22, 23, 25, 26, 27, 30
For PPT to LAX - TN 8 : August 3, 4, 5, 6, 7, 11, 13, 14, 15, 16, 18, 20, 21, 22, 23, 25, 28, 29, 30
I haven't checked beyond that, but given how rare it is to find awards on those flights, figured people might want to grab it