I am different than you and I find that I don't need to change paddles size or style for different waters.
I paddle with a 3 piece carbon fibre Greenland Northern Light paddle that seems to satisfy all my needs, from still lake water paddling to large ocean swell or wave surfing.
I find it difficult to change paddles and takes me a little while to adjust to a different blade, even if the difference is subtle. I like the predictability of one paddle and to know what I can do with it.
As a spare I have an identical paddle on the back deck: low profile and does not get in the way of rescues (which are reenter and roll anyway).
The Kayak Wing
URCHIN Portable Anchor
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