Something I learned from breaking stuff. I like to use a large round pin for picking up the top of a part or even edges. By using a large pin the tool is always far enough away that an oops like a jog in the wrong direction won't crash the tool into the part ruining your whole day. On top I roll it back and forth quickly under the tool until it touches. On the side is a little trickier but no big deal. It's like sailing a boat. It not the water that gets you in trouble, it is the hard parts around the edges!