After some tweaking I've ended up with the main catcher (pyramid) being a single walled structure - 0.5mm thick.
I honestly had no idea if it would work or not.

It's actually surprisingly strong.
I'm doing the second one alittle slower (down to 75mm/s - yes, for me, that's SLOW)
I'll see how the 75 goes and i might up the extrusion a little for the next one fewer gaps = more clarity.