Exactly, but please use the sport values like skateboard
(not skate, not skateboarding) as they are already established for sport=*. (See https://taginfo.openstreetmap.org/keys/sport#values)
Maybe its even worth to use
sports:surfing
=yes
sports:skateboard
=yes
So then its more likely that we establish commonly used Tags in the sport shops and amenities.
I recommend to use the changeset comment to be be used for this kind of plaintext information.
Unfortunately my experience with Organic Maps was, that the changeset comment cannot be changed. And for text put in the comment text field a new map note is created.
I hope that Organic Maps developer team will improve on this and will allow changeset comments.