My responses to your questions assume that you are speaking about permanently built hides, rather than some more portable type situation, and also assumes that you are also speaking of hides in Africa in particular, rather than somewhere like the United States (which seems unlikely since we call them "blinds" rather than "hides" in the U.S.). You haven't mentioned, but perhaps these hides are to be built for use by foreign hunters in a commercial operation?
With those assumptions in mind, I'd like to offer an additional opinion. I've seen many videos of bowhunting from hides in Africa, often with large iron racks holding hay (I think you might call it lucern?), or other above-ground water tanks or feeders.
From an American perspective, depending in which part of the U.S. one lives, the general opinion on baiting while hunting can be quite controversial. People in the Western U.S. are usually much less tolerant of it than those in the East. Non-hunters (American), however, are nearly always opposed to baiting of any type and often view it as an unfair advantage and unsportsman like.
I enjoy taking video from hides while bowhunting in Africa. I really don't like when there are obvious feeders or man-made water catchments in the video. Part of the mystique and allure of Africa for Americans is that the universal expectation is that it is "the wild untamed continent". When showing videos of hunts in Africa that show fences (it is also VERY controversial to hunt behind high fences in America), feeders or other man-made water catchments etc., the romantic nature of an African hunt is shattered for those viewing the video. I deliberately choose to hunt hides that have more natural water sources and settings, even if they are not thought to be the most productive hides, for those reasons. It is important for me to create video that looks like the hunt took place in a very natural wild setting, even if it is a high-fenced South African game farm.
Therefore, if you are constructing hides to be used in the future by foreign hunters, especially Americans, please keep those things in mind. Man-made feeding dishes, water sources, etc. should be constructed so that they are below ground when viewed from the hide. This would go a long way toward making videos look like the "wild Africa" that American's envision and long to visit, rather than alienating many U.S. hunters and non-hunters such as some videos I've seen have done. Just my opinion and suggestion.