I have used both materials you describe over my years with the H16. I live at high altitude, and the sun on a bungee cord lacing, together with water exposure, shortens the life of a bungee system to one season for me, even when the tramp is covered between use. Also, super tension on the 3/8" bungee seemed to reduce its useful life for me. I suppose salt water would to the same thing, but I have no experience.
<br> I also wonder whether the shock cord system REALLY makes the boat tighter because when a full crew/skipper is on my tramp, it stretches the bungees. Unless you get them really tight, the tramp will sag a little in use, which would seem to cause dynamic changes to the system.
<br>I have returned to a 1/2" line system and had both of my tramps double grommetted. With extra care in tightening this line, it makes the best tramp tension for me. I also noticed subtle handling improvements which I attribute to the tightening of the whole hull--tramp alignment.
<br>I will be interested in other views from other H16 sailors. JDB
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