Suggestions please on what to use instead of the Canon neck strap.

[neuroanatomist]

Only thing that might cost you a bit is how you attach it to your camera, I bought another Wimberley clamp to attach mine to the camera. The clamp was more than the strap.

Denise, IIRC you have Arca-Swiss type plates on your camera and probably your 100-400?

My solution was to attach the FastenR-3 (the Blackrapid lug that threads into a tripod socket) into a Kirk 1" clamp (QRC-1, $40 from B&H), semi-permanently with a little Loctite Blue 242 on the threads. It's smaller than the Wimberley clamp (presumably C-12) that Rick mentions, but quite secure. That makes it very easy for me to move the strap from camera to lens or remove it for tripod use.

Lots of details (probably more than you want!) here in this post.

--John