Abavelisi be-kayak yeplastiki ye-kayak bakuxelela ukuba i-kayak nganye ingaba ne-rudder. Ubukhulu be blade ze K1 kunye ne K2 azinakudlula 10 mm; okanye i-K4 ayisayi kudlula 12 mm; isikhephe sisenokwenziwa njengohlobo lwangaphakathi (uhlobo lwe-kayak) endaweni yohlobo lwangaphandle (ukusefa kunye nohlobo lokutyibiliza emanzini).
I-kayak rudder sisixhobo sokuncedisa kwi-kayak. Sisixhobo esilula sokulawula isalathiso se-kayak, kubandakanywa iincakuba zokujika, isiteringi, intambo yokujika, umphini wesitokhwe, njl. Umenzi wephenyane leplastiki likayak ukuxelela ukuba isitokhwe se-rudder sikhona ngokufanelekileyo kwibhodi yembaleki.. Xa imbaleki ibheqa, iinyawo zakhe zihleli phezu kwebhodi. Xa i-kayak idinga ukujika, usebenzisa unyawo lwakhe ekuhambiseni umphini wokujika. Isitokhwe se-rudder sijikeleze ukujikeleza kwe-axis esisigxina. Xa i “T”-ukujika kwesitokhwe esimile, intambo yokujika iyaqhutywa kwaye ivili lokuqhuba lidityaniswe kwelinye icala lentambo yokuqhuba liyatsalwa.. Ivili lokuqhuba lidityaniswe ngokuqinileyo kwirudder, ngoko ke intsontelo yokujika iqhubela intsimbi yokujika ukuba ijike, ngaloo ndlela iKayak iyajika.
Imigaqo yokhuphiswano iyayicacisa loo nto: umenzi wenqanawa ye-kayak yeplastiki ikuxelela ukuba ubude be-kayak's hull bandiswa ngenxa yokufakelwa kwe-rudder., Ubukhulu bencakuba yephini lokujika kufuneka bucuthwe. Ubukhulu begqabi akufunekanga budlule kwi-12mm.
