Hey Len,
Good to hear from you. Hope you guys are doing OK. Looking forward to some of your tasty Mojam Brew.
As for me "running" the contest, I just feel that I should carry on the simple rules set by the founders from the start. Useing a fire to help build the bow sounds nice and simple but what if a fellow rationalizes that a stove is an "indoor" fire...etc.
Hatchet, string and beeswax are the main materials.
Some hints: A stump can make a useful bench. Sitting on the stave works as a vise if you prop the stave against the stump. A tree branch can help you tiller the stave. Hack out a club from the tree you cut down and also "whittle" a wedge ,or two,for splitting out the stave . The hatchet can be used as a scraper with a bit of practice.
Think working on the ground not at a bench. Don't pick a big tree, a good and straight 3-5 incher might allow you to split it in half which gives you a spare stave. Trust me, a backup is a GOOD idea...
Think Oetzi guys, simple and basic stick and string. You will surprise yourselves and it is a fun challenge.