COcheesehead
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No, the opportunity cost is still there with laddering. When your ladder holds a bond yielding less than currently available yields and you hold it to avoid a loss of principal, you still miss the opportunity of the higher coupon bonds you could have switched to.
It just doesn't seem possible to avoid a bit of pain when you hold bonds or bond funds in a rising interest rate environment. You just try to minimize it.
What you are asking for isn’t possible. You want an investment to adjust daily to the market so you don’t have buyer’s remorse. A ladder is the next best thing, at least it gives you fresh funds to reinvest as you wish.