Not sure this really counts as a project (other than the Admiral says it does). The creek and river we are on in NC has a major mosquito issue several times a year, so something is needed to keep them off if you want to enjoy the cockpit in the evening. I found a simple solution using a Walmart $30 screen siding that are sold for 10' x 10' canopy gazebo's.
I simply gathered up the the parts that attach to the gazebo frame with some line and I lay that over the bimini. The bottom has elastic straps that attach nicely to the bimini hold downs and it even has 2 zippered entries for easy access. Here is the Admiral enjoying the results of this 'project.'