i have a 93 pvm zon that i use to duel sometimes. i think i have about 10 points in GA. i only ever use GA in dueling...multi arrow would come in second, never used strafe.
i find slow chars like barbs, necs and sorcs can be easily dealt with. obviously due their deficient defence. but i have major trouble against other long range chars like trapsin, hammerdin, even a charger. i suggest pump points into GA.
just my 2cents