I guess this may be a question for you boating people or anglers out there!! (or potentially wildlife rescuers). I often do
Water Vole surveys or general surveys of bodies of water (like gravel pits) best (or sometimes only) accessed by boat and every year I'm scratching around trying to find a boat for hire in the area. Does anyone know of a cheapish sturdy small row boat (dingy?) to buy that can be slung in the back of an estate car that might be suitable for the job?