Thanks for all the tips on this forum!
I tried something new yesterday: 2 speedlites bounced. In the shot below, lighting is from
(1) a 580EX II mounted on camera but the flash pointed backwards at the wall about 3 ft behind me (wall is identical to far wall in the photo), and
(2) a Sigma EF-530 DG Super off camera sitting in its little stand in the bleachers to the left but bounced off the ceiling.
The red plastic of the EF-530 was facing the wall behind me so that it could see the 580EX master flash. If I did not bounce the 580EX off the wall, but tried off the ceiling or direct, then the EF-530 would not see the master and thus would not flash. Both speedlites in eTTL mode and both manual zoom to 105mm.
As you might guess, I'm trying to avoid having to get some ABs.
[Ooops, this is junior high BB, not HS]
85 mm f/3.5, SS 1/250th, ISO 800
A drive from the 3 pt line: