Hello,
I'm trying to plan how to (better) shoot indoor sports in a high-school gym.
In terms of equipment, I've usually just gone with either a 70-200mm f/2.8 (the fastest lens I have access to) or the stock 28-135mm f/3.5-5.6. In the future, I plan on using a 50mm f/1.4 or a 15mm f/2.8 fisheye.
I have several flashes (430 EX, 550 EX, 580 EX, 580 EX II) and I primarily use my 40D. I also have a few studio strobes but I don't think they're necessary for this.
I'm hoping to set up strobes on the balconies on both sides of the gym. Since I don't have any remote triggers (can't afford Pocket Wizards..), how would I set up the flashes?
I'm thinking I have 580 EX connected as Master to the 40D with a PC sync cord. I would mount the 580 EX on a tripod and place it a few feet from me on the gym floor. It would face the 580 EX II (as Slave) in the balcony and trigger it. The 580 EX II then triggers the 550 EX (also Slave) on the opposite balcony.
The 550 EX & 580 EX II would both be facing towards the key and all flashes would be in manual mode. Would this work as an alternative to remote triggers?
Also, I would like to get some shots from behind the backboard. Assuming the Athletic Director, refs and coaches are ok with strobes and having cameras near/in the backboard, what are some cheap options in terms of mounts?
I know about the Bogen Magic Arm + Super Clamp option but that is nearly $150. Are there cheaper alternatives?
Thanks!

(The ladder being several feet behind the baseline)

