I'm wondering if this is a question of technique and geometry - I've left the tiller quite long - 32" from prod to but and the stirrup is copied off one of Todd's medieval bows bolted in front of the prod which is held by wedges secured by the stirrup - this makes the length from the bar of the stirrup to the tiller butt 39", and the butt end of the tiller comes up pretty high when I try to span.
So - help please: will it help if I shorten the tiller so I can get down lower? Do you use the strength of your arms to pull the string, or your back or your legs by bending down and standing up? Our am I just being a wimp who needs to get down the gym :-)
Thanks - I will try to post some pics later so you can see the proportion.