I am reminded of a competition event we participate in last century when I was a Boy Scout. A small block of pine 2x4, three matches, a pocket knife and a tin can half full of water. Thus all parameters of the contest were determined and equal for all of us. I won though I don't remember the exact time. Thinking back, I won because, being a country boy, I spent more time preparing than most. So my first attempt was successful, only one match used and the first to bring the can of water to a full boil. Those who tried to shortcut for speed failed. Tender, kindling and firewood. A half century of field practice since then has proven that to be the best method. Prep is key.
The water boil was originally in Ernest Thompson Seton's Book of Woodcraft and Indian Lore (1912) in the Games for Camp chapter. The rules as they were written are still in practice at the Camp Fire Club of America who keeps traditions like this alive twice a year as well for the practical application of survival and camp life. As Seton was one of the founders of BSA, it was adopted there as well.
From Seton:
WATER-BOILING CONTEST
Given a hatchet and knife, 1 match, a 2-quart pail, 7 inches of less in diameter, one quart of water and a block of soft wood about 2 feet long and 5 or 6 inches through.
Any one should have the water boiling in 10 minutes. The record is said to be 7:59.
First cut plenty of wood. Spend three minutes on it. Support your pail on four pegs driven in the ground. If water is handy dip the pegs in it before placing.
The water must be jumping and bubbling all over the surface or it is not boiling.
If the match goes out, contestants are usually allowed a second, but are penalized by having 2 minutes added to their time.
Here is a video of my good friend doing the water boil at Camp Fire.
[video=youtube;Yam5aAr1p-I]https://www.youtube.com/watch?v=Yam5aAr1p-I[/video]
Water boil is still part of timber sports in Canada too (girl power!):
[video=youtube;qQgwNqJTZJo]https://www.youtube.com/watch?v=qQgwNqJTZJo[/video]