My parents have several large Sycamore trees on their property along a river. One of them was struck by lightning a couple summers ago and is dying out. My parents are hoping it will bounce back but that's unlikely. We'll see what it looks like as leaves start sprouting this spring. I'd like to harvest the tree and have it quarter sawn before it's unusable. Assuming it's still hanging in there, should we just wait until it's in obvious decline before doing anything about it? Or does that exacerbate the risk of rot & bug infestation, assuming that hasn't already begun?