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We parked our CS23 under a couple of huge Oak trees this spring. The yellow, stringy pollin fell on the boat and left nasty stains all over the swim platform! Dawn soap won’t touch them… and they’re ugly! Any ideas on how to remove them? Thanks!

I've always had decent luck with 303 products - something like https://a.co/d/09oBHpZ4
I haven't used marine 31, but have also heard good things about their cleaner - https://marine31.com/marine-31-vinyl-cl ... ioner.html

and some people use Dawn mixed with a little vinegar or a little bleach and say it works better. I don't know what's on your swim platform, so you may have to experiment a bit.