>> It's been raining almost every day now for the past few weeks and it's really suffered because of it. Even more so when we or the dogs walk over it. Bare patches here and there and a mud trail where we all walk.
That makes me think: "If you dug a hole, it would fill right up with water."
Maybe here is a way to decide how long is safe for a hole to remain full of water. Imagine that you have a healthy plant in a pot. Suppose you dropped that pot into the hole full of water as soon as it had a few inches of water in it. Would the plant still be healthy if the water took 30 minutes to drain out? 40 minutes?
>> Nonetheless, my windmill palm that I've had for second year in full ground now is doing well so far
THAT makes me think: "His soil can't be THAT bad if below-grade palm roots are still alive."
II guess it is another case where you would have to try it to find out.