I like the Dewalt cobalt bits as well. Drilling by hand is easy, You also don't have to go all the way across the head to drill for safety wire. Going through from the top of the head through the side at an angle is all you need for safety wire. As was mentioned, The Suzuki bolts may be softer than other makes.
Does nobody have a bench vise to hold the bolts while drilling? Surely walking 20' across the garage isn't too much effort as well. I kid. I kid.