Not sure what you meant by "3 step process."
The only Bromine I ever recommend on a covered spa is made by the same people who make Baquacil and Baqua Spa products. It is in square orange bottles, and goes by the brand name of 'Brilliance.'
I recommend that if you must use bromine for some reason, because it contains no chlorine. You add an oxidizer once per week, and it works great. Does far less damage to your spa cover, headrest pillows, and you. Bromine tablets are almost half chlorine, and that gives you the smell, burns your cover from the inside out (absorbs water and gets heavy) and so forth. Fine in open spas and pools, not for covered.
I always recommend Dichlor first - you add just a touch after every use. Skip a day or two? Fine, you don't need to add chlorine if you're not using the tub. Add it after use, no chlorine odor while soaking. Cheaper too!
And as to the floater - another reason I don't recommend bromine. You have to test, but if the levels get too high, most people don't think to take the floater out for a while. Most floaters will end up in the same place once the lid is down - and that place will show it years later whether it is damage to the shell or the top of the filter.