So in the mash kettle I drop the filter in, put my grains in, fill with water and bring up to temp and I recirculate. When finished I open the valve on the kettle and using a March 815 pump, all 1/2" lines, I pump it to the boil kettle. Sparge and finish.
While the temp on the boil is coming up I dump and rinse the filter. I don't have to dig out the grain. Simply lift up and dump! My wort is much cleaner because the filter has smaller dia holes than the false bottom but more of them. Drop the filter in the boil kettle. Once boiling begins I follow my hops schedule. When that is finished I open the valve on the kettle and pump through the plate chiller (no immersion) and into the carboy. Again using this filter and the bazooka I have the cleanest wort I have ever had. I only use the bazooka because I already had one and it does help out as a secondary that is more refining. Way less hops finings sitting on the bottom to potentially burn then ever.
Using ONLY the bazooka, the hops would surround the filter and stop fluid moving into the pump. In my experience that filter by itself was a major problem! When this idea came about we had spent over 2 hours moving wort to boil and wort to carboy. That is ridiculous! We were fuming!
This new grain and hops filter has made the entire process so much easier for us. To answer your question Rbeckett, "Yes", we brew 6.5 gallons with this filter. No reduction of anything at all. It sits above the bottom of the kettle at the same height as a false bottom on S.S legs. It is 95% of the radius of the kettle so there is no volume lost. We have also made another for a friend using Keggles and he love it as well! Big filter for that application but just as simple!