Wrapping up replacing the headers on my current project... 3rd time I've done headers on a pin and decided to make my life a touch easier this time round. Here is a quick "hack" using using clothespins:

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You need to cut one of the fingers. The pliers I'm using, it took a few times to work my way through to make the cut.

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Not required, but I'd suggest you use a file to clean up your cut area and to also file a notch into the long finger to give it more clearance.

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And here is the results of about 60 seconds worth of work.

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Long finger for headers set back in the board.

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Short finger for headers along the edge of the board.

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Why I suggest to file a notch, more likely to clear the pins.

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A bunch of headers loaded up. I would solder 1 pin into place and remove the clip. While the soldier was still flowing, I'd put my finger on the header to make sure it was flush/flat on the PCB. Once all the headers were secured, I went back and did all my soldering.

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PCB pegs or something... 5/8" dowels cut to 2.5" and drilled. #6 screws and #6 washers. Just fit them to the mounting holes of the PCB and snug into place.

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A few pegs I had to whittle down a little bit with a pocket knife.

This worked out pretty good for me, figure I'd share. If you find it useful, leave a comment.

Regards.