Sailing tips and tricks

I’m hoping to find interesting articles relating to RC sailing that may be beneficial to us all and posting them here for all to enjoy.
First is a article on mark roundings and how to best determine when to tack to make a clear rounding.
Heres the article:
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This is a technique I learned years ago in a T37 seminar. What i found most important is tuning in to the actual waterline of the mark and the sailboats waterline. Smooth water reflections make it a bit harder. This works best when the boat is within 4 boat lengths of the mark, but still works on longer laylines too.
Satch