There is another reason boats are not such a great idea other than the lack of a need for them in Boundless. All water you see is small enough you can swim across. Sometimes it’s actually too shallow to swim and you end up wading. As it is, it will take a very long time before you get the feat that rewards the most points for swimming distance. Add in boats and nobody will ever get the feat.
I never played Minecraft and have no desire to do so. However, I’m guessing the boats there just kind of magically appear where you want them and are mechanical. In Boundless it’s more like life. It wouldn’t be mechanical as you would have to manufacture all the parts yourself after gathering the materials. Then you would transport this boat without cars or trucks. Essentially, we put everything in our backpack as it is. So, it would have to be small and foldable. The only way I could see that is if we had something like a friend of mine invented and made. He was a nuclear engineer retired from the Navy and invented a kayak that weighed something like 7 pounds and folded up where you could carry it in your backpack while backpacking. It was awesome and tough enough for shooting rapids in Montana. Those I could see in Boundless. However, the swimming feat would be history.