Why not? Traditonal Japanese bows are often 7ft. plus. The bottom limb of any bow need not be any less than the distance from your shoulder to the ground--and thats only if you plan to shoot it vertically. If you cant it of course you can go much longer. Many S.Amer. "indians" shoot and effectively hunt w/ bows that greatly exceed their height. My exp. is that the longer the Bow- the more stable it is, and more forgiving. I hunt w/ bows equal to my ht. (72") and would not hesitate to go longer.