Terry - personally, Unless I was going to reflex a bow, or somehow induce reflex to improve the performance, I wouldn't do the sinew because it's to much work and may have issues in a wet climate. Then you have to consider snakeskin, or at least be very considerate of using a very watertight finish. You tiller just fine, and I'm sure you can get that stave to 28". also if there's no backing then you can use parrafin, which is super easy and foolproof. I just finished a bow done unbacked and parrafinned and she'a a fine bow. In fact I named her "simplicity". Sure we can make 'em with all the bells and whistles, but the end result is they all throw arras 'bout the same...Steve