Hi Terry...
The best way to keep mud off your windshield...is to buy my blown alky motor...stick it in your Jeep...and outrun the damn mud.
But...you prolly wont so...yup, the holes are a good idea. Most guys run a slot or rectangular hole in front of their face.
Wipers work great for dirty water...but they sukk for mud.
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Wigger Claw at ya... \m/
Dammit! I went past the giant connecting rod!!! Now what???
**Pardon me....would an assratchet fix the big crack in your ass?**