I've performed dry application on my own pond this Summer and sealed a 3" daily leak completely by applying directly on the gravel seams we uncovered. We plated 12" of high plasticity clay in 4" lifts and compacted, but I think the polymer was the trick.

Provided you could raise the water level immediately after application I think it's worth trying. The benefit of dry application is the precision gained on measuring polymer amounts per 11 sq ft. I'd recommend using a drop spreader to ensure you're applying the correct volume. If I had a sidewall band to treat I'd go with dry application due to ease of application and precision of measurement. Winging it from a boat is messy and time consuming and requires 3 unlike dry application one can perform solo.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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