From the shots and the description it sounds like that was not a risk in this particular spot.
But it sounds as though there are stretches not far away from this spot where it could be an issue, and it is not clear whether this risk was part of the OPer's assessment. In a case where it was thought of and felt to be a strong risk, it would strengthen the sequence mentioned above of swimmer then boat then gear.
Heel and Pegpads™
Bent Shaft Canoe Paddles
PFD's (Life Jackets)
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