Garry, more flattery for you; that video was instrumental in my choosing to go the Dry Fusion route and buy the machine. I was to'ing and fro'ing between DF and Thermadry and when I watched that vid of yours a couple of times I was sold!
For anyone interested in Rotary cleaning (DF or otherwise), here's my technique that I've honed (I made all the usual mistakes in the early days). This gives me good, consistant results in commercial & domestic applications;
1. Thorough Pre-Vac (there's no argument that it's optional in rotary cleaning),
2. Pre-Treat any spots that I think the cleaning process may need help with (ie.. those requiring solvent treatment etc). Any that needed a lot of work, I will use a small CFR spotter to extract rinse them (see, I'm not adverse to water extraction! Rare though).
2. Light to medium pre-spray with a solution that is powerful but doesn't need rinsing. I use either M-Power, Fusion Clean, or Activator (if doing Dry Fusion process).
3. Five minutes dwell prior to agitation. (Good time to get the machine out of the van).
4. Thorough N/S/E/W agitation using either DF Restore Brush (synthetic or low wool mix) or a HOST CRB machine, using gold brushes (wool or thick cut pile). I never rush this stage; it's the real cleaning stage, especially with Rotary Cleaning. The spot areas may get some extra pre-spray and extra brushing. If you don't have a CRB machine, then the XR Grey Pad (from SolutionUK) on your rotary is the next best thing in my opinio. Almost as effective.
5. Mix up HOT solution in the bucket and put in the first pad. Leave in for 2 mins then thoroughly wring out.
6. Place on carpet, in an open area that I am going to be able to manouvre around quickly. Obviously most of the solution is going to leave the pad in the first few seconds of action, so it is VERY important to move quickly with the rotary and spread out the solution evenly.
7. Lower the machine onto the pad and as above, move quickly to spread the solution. I only ever work on an area of 20m2 at a time, with 1 pad. Work back over the area, evenly working the solution.
8. Flip over the pad and go over the same area again. With the DF machine this side of the pad will be hot & dry from the blower so it will greatly help absorb the soil and dry the carpet.
9. Repeat the process for all areas of the carpet.
10. Thorough post-vac. This helps reset the pile and also picks up any loose debris, dirt and loose fibres. (rare).
11. Groom with a brush. Result = lovely clean, fresh, stain-free, stain-blocked, de-odourized carpet.
Cheers,
Dave.