In my early years of mounting seat in my strippers. It was a hit or miss endeavor, if my holes were angled left or right, fore or aft, as I drilled for the hanger bolts.
It wasn't long before I discovered this secret that greatly improved my hole drilling.
This long bit, with light and steady pressure, has greatly improved the alignment. I drill my gunnels, hanger brackets, and seat frame all at the same time.
Try one you will like it !
Jim
It wasn't long before I discovered this secret that greatly improved my hole drilling.
This long bit, with light and steady pressure, has greatly improved the alignment. I drill my gunnels, hanger brackets, and seat frame all at the same time.

Try one you will like it !
Jim