These factors of predominant wind or current effect or how the boat carries rudder, can, to a large extent be decided on by mere observation and "feel", although watching the reactions of the compass needle also helps.
La manqaku ongawomoya okanye iziphumo zomsinga okanye indlela isikhephe esiliphatha ngalo iplanga okanye iphini eliqhubayo, kubungakanani obukhulu singathathwa isinqumo kuqwalaselo nakwimizwa, nangona ukujonga iintshukumo zenaliti yekhampasi engancedayo.