tmilhon,
Whatever you can do to move surface water RIGHT NOW is a must. I had a similar situation to yours just a few weeks ago, tho not as drastic as yours. A trolling motor, outboard (yours or a friends), anything that will get the top 2 or 3 feet of water moving around the pond. The more you can chop up the surface, the better.

If nothing else, go to your local DIY store, buy a sump pump, a 5 gallon bucket, 2 feet of pvc pipe the same size as the discharge of the pump, and a 90. Make a "L" out of the pvc, attach it to the pump, drill the bucket full of holes to let water get in, set it in 2 feet of water with the pump inside. Be careful of the power cord plug not getting in the water. Let it pull water from that 2 foot depth and spray back into the pond. The important part is to agitate the surface as much as possible, as soon as possible.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!