Your choice of clothing depends on several things. A wetsuit is a poor choice because you are not moving enough to warm up the water film in the suit (like when surfing), so you will get cold. Waders can be a good idea, but wear thermal underwear and beware of the dangers of water flowing into the pants. The air gets trapped in the boots and you may end up upside-down in the water. Funny as this might seem, it’s very dangerous. Buy a pair that has a snug fit (neoprene) and a high top, and use a belt or take other precautions.  The best choice is a dry suit, like professional divers. It's heavy and expensive but  the best option. We offer The Suit, a lightweight, fully waterproof dry suit with neoprene cuffs and no hood.  For heavy use and more difficult circumstances, we can recommend the custom-made models by Otter in the UK. They will keep you warm and well protected and are the safest solution, especially when you are alone in the pond.