This clamp is lighter than a C clamp & does the job but it is a bit in the way.

I have a Dean Markley 3001 XM Transducer pickup, it works well on my instruments that do not have a pickup installed. It can be put on & taken off any of the dulcimers & I change it back & forth. There is one dulcimer that when I press down on the pickup, the sound is such a deep bass - it's terrific. 

Question:

How to hold it down tight? Something to hold it from under the dulcimer to the top of the pickup - a C clamp is a bit large. Something like a capo in a very large size maybe  -  Any ideas?

updated by @marg: 04/29/17 05:44:01PM