Footing shafts with 7.5" of purple heart or oasge works too for hiking up the front end weight on wooden shafts.I think I calculated that once and it was about 70 grains worth of extra weight.
I've faningled with bamboo before too trying to increase front end weight.Even putting solder wire lengths in.Burning a hole through the pith and nodes with the red hot tip of a wire.Much like burning a hole through the pith of a sumac pipe stem.
Thicker walled stuff and full length taper helps a lot for that for bamboo.
I found using full length tapered shoot shafts with 145 to 160 grain broadheads without any footings or solder wire brought me to the high teens lower twenties in % of FOC with grain weights in the 600 grain range.Once it's dried and gasket lacquered and shows it's spine it's there for keeps.
I've gotta agree though bamboo is a lot easier to straighten.If I remember correctly so was multi flora rose.
I don't have hill cane here but I'd bet that is too.