On Fri, 26 Jun 2015 13:35:22 -0500, Tim Wescott wrote:
....
Is there such a thing as a stock line of clips for various thicknesses of
material?
....
Ideally the throat of the clip would be 5/16" wide; the depth is quite
negotiable. Even more ideally, there would be a variety of clip sizes
and gauges available. Even more ideally yet, the clips would be
available in stainless steel, or some other metal that can stand salt
water.
....

Spring-steel paint-can clips are available in several sizes with
various finishes. I haven't seen any in stainless.

http://www.thecarycompany.com/containers/can_clips.html
http://www.emptypaintcans.com/canclips.aspx

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jiw