Happy to help, but sorry to hear you're still dealing with those water spots. If you're stuck working by hand I would suggest you pick up some Meguiar's M105 Ultra Cut Compound and get to work on those spots. We sell it by the quart for about $30 but autodetailingsolutions.com sells 12 ounce samples for $9.99. M105 was designed to be used with a high speed rotary but it works great by hand due to it's micro fine abrasives. I've taken out some pretty nasty bird dropping etchings by hand with this stuff so it's probably your best bet for removing those stubborn water spots by hand. The abrasives are so fine that you won't scour the paint like you would with an old fashioned rubbing compound, affectionately referred to as "rocks in a bottle". It will leave a great finish that's ready for a nice coat of wax.