I have the MC Rack which works quite well, especially for hauling clothing that a rider sheds as the day warms up, for instance; today when I started out it was 50 degrees Fahrenheit by the time I returned home it was 80 degrees.
I can't tell you how pleased I am with my Scorpion Hat Trick II jacket. Keeps me comfortable at 30F (8F wind chill) with the Thermal and Waterproof liner in, and today it was almost 80F and I was still pretty comfortable, except at long lights with both liners in. Once it gets and stays above 60-65F I'll pull out the liners and toss them in my backpack and have excellent air passthrough with CE armor on shoulders, forearms, elbows, and a PE Pad for back armor (I'm going to upgrade to the CE back armor soon).
I built a rack modeled after the online rear fender racks. Search for racks, then click on images to find one that shows measurements. Used 1/2” copper tubing, elbows and tees for the rack and 1” aluminum for the brackets that bolt to the fender. When it all fit properly, used J-B Weld to hold it together, removed it, painted it, then put it back on. Topped it off with bag that used to hold our VHS camera. The right-size straps coincidentally matched the bike. If I were to go back, would probably just order one. I spent about $20. See below.
