Did the rears only as i used the shield with no mix/dilution.
Used Shield Blade, Wheel arch brush and topped it off with adam's undercarriage invisible spray.
This is what i had to deal with

The process i followed was spraying the Blade thoroughly, then leaving to soak. Agitating with long handle brush thoroughly and then hosing away. Dried the arch for inspection with my little red blower machine.
This is what i ended up with
Right side after round one

left side after round one

As you can see, the product really didnt hold its own and a second pass was needed.
Final step was to quote with the adams undercarriage spray, this product is amazing to say the least
Right side finished

Left Side finished
I brushed the exhaust box too as you can see

I have come to the conclusion that Shield Blade is pretty weak and am happy my Cyclo got delivered yesterday.
I will try the Cyclo on the fronts Next weekend or the following one