Here's my $.02

We were mid-atlantic, sailing a 29' cat westbound. Checking for chafe on the foredeck on a beautiful moon-lit night, boat speed moderate, waves moderate, motion almost nil. As I started working my way aft, a small wave gave the boat a lurch and my leg pushed against the lifeline, producing maybe a 1 or 2 lb push. I was shaken then, and have been shaken ever since. What would have happened without that 1 lb push?

Regards
Chet