Gave me the chills reading that this morning... RIP and god bless.
Let's get some better procedures enacted here... This is not the first time this has happened here. I think there should be a "PUBLISHED" advisory frequency. If you go look at a SoCal TAC, you will see some practice areas with a published frequency, but when you come here to Florida there are none published and there are thousands of training flights a year here. I know this won't prevent all accidents since it is only a voulantary task, but I think it will allow the pilot to become more situationally aware of what is going on in the practice area as well as having "most" on the same frequency.
I am sad to see this happen again, and more lives lost, but come on, let's keep our scan going OUTSIDE as well. Your pretty G1000 is not a TCAS II so you need to see the aircraft visually before you decide to do a see and avoid procedure.
Fly safe all!
Nick