Hey buddy,
I had a similar situation but mine wasn't coated. I had to seek Mike@autogeek's insight.
I had driven to work and parked under a tree which squirted all sticky sorts over my car several times. Although I washed it, it still left remnants I.e when I did the baggie test I could feel the bumps.
Tried claying, both Meguiars and Bilt Hamber (Aggressive) didn't shift much.
Then resorted to using paint thinner AKA white spirit to wipe the car down. I'd say it loosened and removed 50-60% of the bonded tree sap.
I then took my flex 3401 with a medium grade Nanoskin Autoscrub pad and went over the entire car. I'd say 70% of it was removed.
The nail in the coffin was a hybrid lake country orange pad with Menzerna 400 which made it smooth as glass.
But then again mine was a little extreme.
Here's a before and after pic
Mike@Autogeeks patented baggie test
Nanoskin Autoscrub Pad on Flex 3401
Claying the boot AKA Mechanical Decontamination
Finished after using Menzerna 400 and IPA wipe down
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