Drano
KISS
Get your key points, bullet point them and then discuss, let the group interact.
For example. We talk about hollow trunks, the 0.3t rule and the 0.6t rule when over 40% (almost half) cavity open. Then ask for examples or put pic up and talk about it.
Then, for example, included codominant stems, what are they, what to look for, severity of elephants ears, weeping from join, cracks etc.
And so on, just bullet point the main parts, have a pic or two and discuss it like you would if we were standing there together right now. Easy. No sweat.
If you're really worried you got it all covered put the bullet point list up here and we'll see if ya missed any or give more info.
Cheers
