You guys might want to check this for some much needed throwbag development Shaneslogic a kayak blog: The Liquidlogic Speedloader Throwbag
Ture is right though that you never will really have the time to re-pack your bag for your second toss, not even a chance. Both the coil and the fold technique can work however, IMO, if you do them correctly. Kind of tricky though as Ture mentioned.
I got to say I kind of like the WRSI bag and use one currently. I haven't found it any harder to pack than a regular bag (they are all kind of challenge) although I am chompin at the bit to try the speedloader.
If you're looking for a good swiftwater rescue class we offer relatively inexpensive yet comprehensive hands on courses, where we cover throwbag technique in every detail and a number of other topics including river running and rescue strategies. For more info River Rescue «
This new site is still in progress and class dates are not updated yet but they will be soon. I will post on the buzz when all of our dates our set.