Joe: Thanks for running the bottom test for me! I'd be running this mode most of the time. My fiberglass pool's walls need to be lightly brushed only once a month or less and I've never had trouble with the waterline, so I'd be using the cleaner most of the time on the bottom. My main concern was getting this done in a short time - 2 hours is reasonable and with the Costco return policy, it's tempting.

Carl - thanks for the BD info. All the more reason that if I buy it, to go with a place that accepts returns. If it can't do my 16x33 pool without a remote for $1300, forget it !