Well just ordered a Firefly Flathop nub & Prommy Purple and will attempt my very fist 'flathop' in a few days. The whole 'wiring to deans' went ok, so this is the next step.
I'm also trying this over the weekend for the first time too - I'm using a madbull hop unit and I 60 degree Shark hop bucking. I'm going to do the DIY approach of using a rubber eraser as a hop nub and see how I get on. We should compare notes 😅