For the upcoming year I will be taking additional Technical Diving courses. One of those classes is the TDI Extended Range/Trimix combo class. One of the prerequisites for Trimex is that you need 25 dives at 100ft or greater. I currently only have 9 dives. I'm planning on knocking out the remaining 16 dives but then I thought to myself, "What is the best way I can utilize those 16 dives?" In other words what should I be doing or practicing that will benefit me as a diver at that depth? I'm thinking anybody can teabag 16 dives, but I'd like to make the most of it. As always thanks in advance!