A lot of big bass in the same area!

Last spring i was fishing for the spawning bass with a 3/8 ounce blue and black stanley jig with a blue trailer on it. I started out fishing on a tree line right on the shore. I wasnt catching much a couple little bass, then I tried moving to a couple of other spots neither of which were successful. It started to rain, so i decided to move under a tree with my boat for some cover, I was still fishing with jig and decided to do a little flipping under the tree. A couple of casts later i latched into a big one. You know that feeling when you get a big bass on? when you set the hook and your rod bends over and the fishing is thumping but will not move, its a great feeling. That is what i felt when i latched into this one. It was a big fish, I got her in, she was about 4 lbs, not a bad bass. I then casted back out, on both that cast and the one following i caught a 5 lb bass and a 6 lb bass. I thought to myself that i must have found a nesting ground for some big fish. The water that i was fishing in was about 4-6 feet deep, perfect for nesting bass, big nesting bass. Although i didnt catch any more fish at that spot, I had a great day just with the 3 big ones I did catch, I then decided that I would move to one more spot, and fished there for about 10 mins. Within those 10 minutes I got another 3 lb bass. All in all I had a great day, I wish that would have been a tourniment, I would have been in the money with that bag.