Wow--I thought I'd heard it all, but that's a new one on me.

That diagram ain't bad.

But to put it simply, when shooting uphill/downhill you're not shooting for the linear distance along the ground from you to your target. That distance is like the hypotenuse of a triangle. Rather you're shooting the for the linear distance as if you and your target are on the same level plane. That is a shorter distance.

It is this way because gravity always acts straight down. It doesn't care if you and your target are on the same level. But it has NOTHING to do with making anything go faster.

Here's a link to deeper explanation:
http://www.archersadvantage.com/TipS...UpDownHill.htm

That thing is nuts. I see it's a lefty, not too surprising. It is definitey out of left field. Tuning has to be a headache.

Penobscot bow--I've only seen a few, never shot one.

I have been planning on making a Penobscot bow. Just don't have the time. Heck, I have three bows going right now and have to find sometime to finish them. One has been on the tiller tree for over a year (figuratively speaking, of course).