A good snap of the wrist with poor arm extension won't make the disk go very far; likewise, poor wrist motion means the disk will have a very unstable--and therefore very short--flight.
他後來才逐漸領會：光用腕力飛盤會旋轉，但不前進；如果只用臂力，飛盤「航線」不定，很難平穩飛行，「一出手就摔下來，真是出師未捷身先死！」