Be VERY careful with the hydrated lime. Change the pH too fast or too much and it will kill fish that can't escape it. Anything on the boat that it touches (especially aluminum) will get chewed up pretty quickly and over time unless you can neutralize the lime residue that is left.

Can you contact the local farm fertilizer place and have them back the lime spreader truck to the pond and let 'er fly?

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).