I decided to try making fire utilizing the Bow Drill method several years ago (What can I say, other than I had entirely too much time on my hands)
Among my first realizations on this matter was that primitive folks were a lot smarter than we might give them credit for today. You can bet I now make sure I have about 16 different modern flame producing articles available when I go to the bush after playing caveman in the Garage.
Additionally, I surmised the odds of some poor soul actually making fire with this method when they really need it, say under god awful survival situations i.e. cold, wet, tired, hungry and possibly in shock, are about ZERO if they haven’t ever tried it. It’s not something you can just read about in a book once and expect to be proficient. God help you if your sole source of knowledge on primitive fire making is from a movie.
Anyway the selection of the type of wood to use is important and of course depends on your location. In North America, I am familiar with Cottonwood, (Populus sp.) which is common even in desert areas. It works well for both the drill and the fireboard. I suppose other light, non-resinous woods would work okay.
Anyway, I too noticed that without a strong cord for the bow, you “ain’t goin anywhere” so to speak. I compromised intellectually by rationalizing that a bootlace is reasonably expected to be available in most survival situations. It’s an interesting exercise and certainly illustrates how dependent we can be on technology.