Don't know if it's the "best" way but... Dawn dishwashing detergent works well on sap. Right out of the bottle, drop or two on sap, let sit minute or so, then wet rag. Will take some rubbing and maybe couple of tries but actuall works pretty well.
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Everyone is good at something... I happen to be a good bad example.
If the panels are glass you could use a razor blade to get the majority off (like taking a sticker off of a window) and then just clean up the residue after. Ive done that on my windshield before. Then as NJKris mentioned, follow with Goo Gone. But, I would use this method ONLY if its glass.
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2023 GMC Sierra 3500 Denali
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