Actually, it doesn't get much simpler than the speed pad. In the special effects guide, some types have a certain number in (), so they require a special tag number. All other effects don't need a specific tag number, but keep in mind that you need a new tag for new effects, unless you are making more than one effect on a sector. If you have a FOF in a sector tagged 1, and you want water in that sector, then you tag the water 1. If you want water in another sector, however, you need to tag the new sector a different tag, likely 2, unless you want the FOF in there too.