Complex sentence: These facts make Howard Hill's feat more impressive since he only used Port Orford cedar wood arrows, but he did design specially made aluminum shafts to hunt rogue elephants in Africa for his full length, color film: "Tembo".
Split into simpler sentences: These facts make Howard Hill's feat more impressive since he used only cedar wood arrows. Hill had, however, designed and used specially made aluminum shafts to hunt rogue elephants in Africa for his full length, color film: "Tembo".