Wow, 78 degrees, I'm surprised it's not much cooler at depth, hopefully the trout will survive, we've got some cool weather coming for the next 3 days.
If you get that mayfly hatch you'll have some happy fish.
The db100 came yesterday and we'll be going up to the cabin tomorrow till tuesday, so I'll report on the results next Tues.
It sounds like your pond is still doing better this season.