For the gaff you need 20" of stainless wire 0.02", 1m of pvc pipe 1", 2" of pvc pipe 1.25", a pvc cap 1" and a pvc cap 1.25", 10" of bamboo about 1"
Firstly make a hole in bamboo and 1" pvc cap, I used the stainless wire, I heated it and burned a hole.(Sorry about following photos, I assembled before took photos)
Cut the bamboo from hole till opposite side
Sharp one side of the wire and bend it into a hook
Put the hook into the bamboo and put it in the 1" pvc pipe
It must go in with pressure, after put on 1" pvc cap
On back side I used 1.25" pvc pipe
And 1.25" pvc cap, now it never slip off from my hand
Now it looks pretty well, but need to add some rope on the handle
on the handle and on the point
and that it
this gaff never drown.