Re: Why were some boats made without bilge pumps?
A bilge pump is recommended in any boat (at least one with some sort of electrical system) and a manual pump if the boat does not have an electrical system. However, in the case of small boats where the operator can easily reach the drain plug, as mentioned as long as the boat is moving at a fair speed the entire stern is above the water line so you simply pull the plug and drain the boat. Stick the plug back in before you cut the throttle. If you can't reach the drain plug then a pump in my view is mandatory or you best not get any farther away from shore than you are able to swim. As to why they aren't included on all boats, it is probably because the boat design (like a pontoon) doesn't have a bilge or because the bean counters at the manufacturer deemed it a cost savings.