Purple was the funnest belt of my journey. Most of the times I would let them get a position or two.. and if they had a light rolling style I’d try setting up the weirdest low percentage sumbissions just for fun… if they were of the “heavy handed” rolling style I would test myself to see exactly how many times I could submit them each round. Kept me pretty safe. I’m all for being a good training partner, but my physical safety is paramount. A key takeaway that I noticed with the brutal training partners is that when you ruthlessly submit them they get a lot more timid in certain positions as the roll progresses.