"...How high above the water does the Army recommend executing this jump?..."

I just don't remember, it was tooooo long ago. I did a lot of overwater flying with Army Warrant Officers (who were civilians a very short time ago), so I looked thru the manual just for my info. But I always figured that popping the door while inflight was OK, but I didn't really like that jumping out part. I seem to remember that the top speed/altitude for jumping from a helo is 30mph/30 ft MSL. Unless the pilot did a good job of stalling the aircraft at the proper altitude a Beaver jumper would probably exceed both...