In reply to Mr. Lee:
> Maybe you could fill the hollow interior to dampen the noise? I use this stuff in my profession to fill cavities. It's a liquid that when mixed with the catalyst quickly expands into a lightweight foam to fill a given space. I'm sure there are similar commercial products available from DIY shops.
Probably best not go dipping the dyneema slings of hexes into a complex chemical such as this, unless one of the gear manufacturers have tested same first. The stuff you get from B&Q has warnings all over it, suggesting it might conceivably be aggressive to sling materials; I wouldn't take the risk.
I disperse my hexes about my gear loops when walking off, to reduce noise, balance out their weight and to try and reduce their patella whacking tendencies.....