KEM... overdraws are definately a thing of the past..

With todays light weight carbon arrows.. there's no need to shorten them any shorter than any normal length arrow.. IE 1" shorter than draw length.

I do agree that the 12 series aluminums (2212, 2312, 2412, 2512) are pretty fragile... alot of people shoot them w/ good success. I used to shoot 26" 2213s that weighed 400gr at 80# off a 4" overdraw... at a whopping 300fps back in the early 90s when this was the common belief that is what it took to obtain such speeds.

I now shoot a 60# bow at 29" draw w/ a 28" GT 22s that weight 300 gr.. and shoot about 314fps...

Yes shortening your arrow makes it stiffer.. but the advantage of an overdraw was that you could shoot a shorter arrow w/ less spine.. and still be correctly spined at the given weight. Moving the pivot point behind the wrist was detrimental to accuracy for most though... This is where the common saying "I'd rather have a slow 10 than a fast 5 any day" came to be. Today there is just no need for such contraptions.

Things that will increase speed..

1. less weight on the string... nocks, peeps, silencers, rubber tubing, ect..
2. speed nocks near the cams
3. lighter string materials like TS1 or 8125
4. more pounds
5. more draw length
6. lighter arrows
7. stiffer arrows.. if you're on the line.. go w/ the stiffer arrow.. weaker will expend energy trying to stabilize
6. tuning.. cam timing.. ect..
8. buy a Bowtech!!!