Here are some options if you find a turtle nest and are worried that the nest will get destroyed:
You can use something like this to make a protector.
Put a heavy brick or stepping stone on top, or stake it down!
Brand new nesting area for pond turtles.
â“’ Aleks Haecky (CC BY-NC-SA)
These are good basic incubators for a decent price. I've had mine for over ten years. G.Q.F. Manufacturing 1602N Hova-Bator Incubator