There are a few things to consider when deciding what type of boat to use on a pond. First, consider the size of the pond. If it is large and has open water, then a pontoon boat may be the best option. If it is small and/or has lots of vegetation, then a kayak or canoe may work better. Second, think about how you will be using the boat. If you plan on fishing from it, then you will want something that is stable and has plenty of room for all your gear. A pontoon boat or canoe would work well for this. If you just want to paddle around and enjoy the scenery, then a kayak or canoe might be better since they are easier to maneuver. Third, consider your budget. Pontoon boats can be expensive, so if cost is a factor then a kayak or canoe may be a better option. Whatever you decide, make sure you test it out first in calm water before taking it out on a pond.