Just some random thoughts, perhaps in no particular order...
The first time I used Hydr02, I was disappointed. I mean the gloss, shine, water beading and slickness were all top notch, but I had streaks (and a lot of them) all over my motorcycle.
Brazenly applies it with no regards for other people's instructions, I put it in a spray bottle, soaked by wet motorcycle with water, sprayed on a thick coat, and "blasted" it off with a garden hose...
The result was shiny, slick, streaky mess... Streaks on the matte finishes, streaks on the paint, streaks on the seat.... Just streaks... After a lot of rubbing these fresh high spots, I removed 90 percent of them.
I watched a few videos on how other people did (Product was VERY new at the time and little information was available). I decided to work backwards...
For my next application, I started by mixing in a spray bottle, wetting my car, and applying 1 mist to the pane. Then I blasted it with a hose and was AMAZED at how far the one mist covered.
I worked the rest of the car -wet - 1 mist - rinse & spread at a time. While this took much longer, I was left with a slick, shiny, waterbeading finish with no streaks.
What amazed me was how very little I used. 1 mist at the top of the door would usually spread to cover part of the roof, down the window, and some of the bottom half of the door.
I was able to cover my entire Speed3 in about 11-12 mists, maybe a few more.
Then I started to build up, on different cars, seeing how much more I could use and not get streaking, how much less I could use, different dilutions etc. Now I have no where near the experience with Hydr02 as some of the guys that use this stuff frequently, but I did to take a systematic approach...
Here is what I learned
Hydr02 spreads like crazy. If you apply it to a wet surface and blast it with water, the water will transport it to far reaches of your paint, into door jambs, under door handles, behind mirror housing, etc... Very little goes a very long way
I find that it works better between 1:6 & 1:8 dilution for user friendliness. Remember that it should be applied to wet paint, and the amount of water on the paint will vary greatly. You can play with the dilution and find what works best for you, with little loss in durability or performance - in my experience.
The wetter and more uniform the surface, the easier it is to apply Hydr02. Freshly coated, waxed or sealed surfaces can a be little more difficult to get streak-free coverage as the water beads and runs off. The easiest surface be one were water lays flat.
When working on freshly waxed, sealed or coated surfaces, I have reduced the dilution to 1:8 and found it made it much more forgiving to streaks.
I prefer a high-atomizitaion trigger sprayer over other types of application. Preferably something with good volume per long throw, as it lets you really sweep the mist out. Mist 1, 2 or 3 times to cover the area and blast off immediately.
I have tried literally every bottle and sprayer we sell, including pressure pump sprayers, and found that this simple one works best for me:
36 Ounce Detail Bottle