I would be tempted to keep them and just feed them very well ..............................but only because I have such a hard time getting things to be healthy in my yard I'm sure if I took out one the other would die.

Not familiar with that specific variety, but a healthy zucchini plant will spread 3 to 4 feet across, in which case I'd definitely thin down to 2 plants, 2 feet apart.

I should have said in my original message that there are 6 plants total, planted in 3 separate little rows, 2 ft between each row, with 2 plants per row(about 8 inches apart) Hopefully that clarifies a bit!

But I'm guessing I should still thin them out to just one plant per 2 ft.

Prolly

Squash have a tendency to grow over other plants and "squash" them hence the name.

SCG

I would pull the two in the middle of each row. Fly Saucer squash grows a lot like zucchini so it doesn't crawl much like a spaghetti squash but the bushes can still get quite large.

I try and plant all my squash a min. of 3 ft apart and I still have a hard time walking through them if they grow well.

If you're worried about the others dying after you pull them, wait a little longer before removing them.

Also - don't think just about the number of plants or spacing - think if you really need all that squash!!!

Happy Growing! :)