logwrig, I have been pouring and tying ultra finesse jigs using that weedless ballhead jig and it can totally be done. Like Cadman said, a drill bit works great for the weedguard hole.
As much as I love the versatility of the weedless ballhead jig, I've been looking into getting a Snootie jig mold as well. While the ballhead is a great finesse profile and is rapidly becoming my Ned Rig alternative, I suspect the Snootie will do much better for pitching into cover and swimming through grass. Just my 2 cents.