Got an Aqua Bug vacuum with my pool package. Have watched it run a few times and just can't fugure out what pattern this thing runs around in the pool. Do the antenna actually do anything besides make it look like a bug? Does it just "randomlly" move around by water being sucked thru it or does it form some kind of pattern "memory" while zipping around the bottom and touching the side walls to make sure it gets full bottom coverage and just not re-vacuuming what it did previous? Manufacturer website does not address how these things actually work, that i could find.