Once you've established what constitutes FULL for your batteries (notice I said 'your batteries', not someone else's) then you can establish what it takes to get them to FULL on a regular basis. At which point, you'll know when to stop charging simply by the amps accepted at a particular voltage... say 2a at 14.8v.
And it may not take 14.8v. It may only take say 14.6v. What is important is that there is a slight gentle bubbling going on (not a rolling boil, but tiny bubbles every few seconds or so). This is an indication of gentle gassing going on. This, like EQ'ing, is where many folks get tripped up. They get gassing, while charging, mixed up with gassing during prolonged float mode. There is a huge difference, and your manual touches on this. No, you do not want your batteries gassing, while in float, for weeks on end, unattended. But this does not negate the need to bring your fla batteries up to gassing voltage, to achieve a FULL charge.
It's easy to just throw numbers around, and then argue over them. What is really needed, is one's attention to what their batteries really need, and not what someone else 'believes' is best, based on how it makes them feel. And once you establish the facts, charging will be much more predictable, and require less attention to every detail; although you will need to 'check in' once in a while.
