You must learn to know your boat, whether current affects it more (deep draught) or; whether wind has the greater effect (high-sided boat).
Kufuneka ufunde ukusazi isikhephe sakho, nokuba umsinga usichaphazela kakhulu (umsinga wamoya onzulu) okanye nokuba umoya unempembelelo enkulu (isikhephe esinamacala aphakamileyo).