I have been using Raggtop for the last month. Its the only product that the manufacturer will officaly sanction.
they sell a two bottle kit. One for cleaning and one for protecting it. You should use only an OXO feather tip brush to clean it.
http://www.autopia-carcare.com/oxo-17007.html
The protectant creates a very tight beading effect, which is vital for canvas tops. when dirt begins to penetrate into the fabric is when the top begins to deteriorate.
The kit is $25 on Autogeek.net
http://autogeek.net/racotopcakit.html
Also when going to a car wash don't let them put soap on the top, just have them rinse it thoroughly. Don't let them use the wash mit on the glass or platic window either.
Plexus is absoulutely the best product for plastic, use an old Tshirt and it stays crystal clear. Great on head and tail lights.
As far as UV protection in the HOT Florida sun I would DEFINITELY consider buying a Subrealla top cover, I have one now and it not only protects the top but covers the windows to keep your interior from fading. I paid $50 for it.
Keep the bird dropping off your top as well.