Thinking about this http://chdk.setepontos.com/index.php?topic=11527.0
I realized that rsint could work the same way.
I've added this in chdkptp r652. By default, rsint now uses the new method, but continuous mode + shoot hooks can be selected by passing -cont
The new mode has several advantages:
* It doesn't require continuous mode. This is nice because remoteshoot in continuous mode has problems on some cams. Also some cams do not save the continuous setting between reboots.
* It doesn't require CHDK 1.3 shoot hooks.
* You can quit without taking a shot (use q at the rsint prompt)
* Exposure changes should affect the next shot, rather than the following shot.
Based on the testing in the linked thread, the max speed shouldn't be much different. The latency between issuing and s command and the shot being taken should be better in continuous mode.