I'm considering Hotspots to use on my site (http://boatfuel.eu) instead of the system we made ourself. I do wonder how to use multiple categories though. Basically I have a Fuelstation and for that Fuelstation I would need to indicate if it sells Petrol or Diesel, or Both. The category seems can only be one, so I guess that won't work.
I also looked at the custom fields, though some help text mentions checkboxes, I don't see how I can create checkboxes there. A checkbox custom field would probably do, though I would need to filter somehow on that in the user interface. (people need to be able to search for a petrol fuel station).
Anyhow, do you have advice how this would be possible?