Overzealous and now overcrowded

After a long dark winter in upstate NY I ALWAYS have trouble following spacing guidelines, and now I'm of course overrun!

I'm ready to bite the bullet for the good of the survivor(s) and pull some out, but I'm not sure at this point how to do it... do I just hack away at the leaves and let one or more of these die, or do I really need to get in there with a suit of armor and pull an entire plant out? They are in raised beds, and I had to put the fencing bits just to clear a place for me to walk. I did this for my zuke, cukes AND yellow squash. What's the best approach that won't completely mess up the rest of the plants?