Boat dock

Figured able to solve all other problems, let's give this a try! Have a floating boat dock, just informed the lake water level is to be lowered for dredging. Only problem is one side of dock is high and dry, not able to float dock to middle of lake which is what has been requested. Any thoughts on how to get the other side back into the water? There is no major rain forecasted, lake is naturally low because of no rain, and lake lowering begins Nov 1st.