Francone said...
Thank you for your hints!
There is one more point, however, which is unclear. Guy Cribbs, I believe, proposes a " reverse steering" for upwind as an alternative
Tried to find where Guy Cribb says that?, I only use the windward rail technique, but in both cases you are using the rails of the board to provide resistance against which the sail works against to make you go upwind.
When you sink the windward rail your'e not actually 'carving', or 'turning' otherwise you would turn around in circles... Though initially you will 'carve' or 'turn' as you bank the board, but once you settle into your new heading you stop turning, and the resistance from the rail assists the fin taking you upwind.
The same thing happens when you sink the leeward rail just in the opposite direction, though I think this technique works best for longboard, especially with a centre board and bleating straps. I am sure it would work for your rio with the daggerboard down, not so sure how easy that technique would work for the rocket.