I am on day 3 of 30 mph winds with regular gusts into the upper 40s on anchor with my 2 years old snubber. This snubber will get replaced this year!
What good is a snubber that:
1 - has lost its' stretch (and of course you don't know and have to assume either way)
2 - isn't strong enough (mine isn't as strong as my chain is rated because I have overkill chain to allow aging)
I consider my anchor "system" the cheapest and most important boat insurance I have. And the snubber is the cheapest hardest working part of the system. Having a snubber that is old and undersized is a formula to have it fail at the worst time. Thinking that your snubber is mainly to take the load off the windlass 95% of the time sets you up for the time when the last thing you want to have is it to fail in those conditions.
Of course I am just a sailboater currently with a 41' 22,000 lb boat using a modern 60 lb anchor. I guess my thoughts wouldn't apply to a trawler using a 40 lb CQR.