The South Bridge Boathouse is familiar to anyone who has rented canoes for a paddle downriver to visit the Old North Bridge. Occasionally I pay the proprietor a few bucks to put my kayak in and take it out from their dock.  Money well spent when I prefer to stay dry (most other put-ins and take-outs along the river are wet).  Currently, the river is so high that there is scarcely clearance to paddle under a number of bridges on the river.  In a few weeks the water level and temperatures will be conducive to kayaking and I hope to do more this year than last.