The answer to all of your questions is both yes and no. Depends on the mood of the fish.
Ice busters are probably one of the best ice fishing bobbers IMO and you can get them at Wal-Mart. I personally use spring bobbers or dead sticks, but if you want to get back to the same depth and don't have a locator, slip bobbers are the way to go. I usually start out with a slow, lazy jigging motion and one waxie. If the fish nails it, switch to a little more agressive jigging and add another larva. If you can't tell how agressive they are biting, do a jig and pause.
one thing that is over looked way too much is note placement. You want your note positioned on the eye of the hook so that the hook lays on its side. I bought an underwater camera this year and you can actually see a fish's reaction to even the slightest adjustments. It seams so minor, but makes a world of difference.