Sight window for Hill long bow??

[cobbow]

I have a plan form Bingham Projects for one of their long bows. It has what seems to be a very shalow arrow shelf and sight window.

How far from center shood the sight window be cut?
If I wanted to make it a left and right handed would I need to strenghen the riser with something?
How close could I cut the windows on each side?

If I was able to do the l/r I would shoot for around 45# or so.

Thank you for any advice ya'll can give.
Cobbow

[bjansen]

What kind of riser material are you using cobbow?.  If it is a laminated riser, I would say you could cut it to center (leaving 3/4 or a bit less in the riser).  I just checked out a 58# longbow I made recently, I cut it past center and their is 5/8" of material left side to side and it had 1 3/4" back to belly.  The section had 11 lamination front to back though.  

If you are going to try a double rest, would recomend  keeping it thicker at the back of the bow (say 3/4") and then radius the cut to the belly coming in more (say 3/8"). I saw this on a 60s Bear once and it looked and shot quite well.

[cobbow]

I dont have materials yet still planning this one.
Thanks for the advice.
Cobbow