Ive chopped one of my brakes on my last dirt scoot, it made a difference.
And its not hard to drill a hole in your deck perfectly.
Get a nail and hammer, line up where you want the hole and hammer the nail lightly.
You should always start with a smaller drill bit and slowly drill with it.
1/8" is usually the largest drill bit that has a full cutting head on it, larger sizes will not cut on flat metal and are made for increasing the size of pre drilled holes.
So, just tap a starter mark, drill slowly with a 1/8" bit, then increase the size of the hole with another bit.