WTNUT, I don't expect to be doing much work inside the fence. For now I have room to get in to regraft and replace a couple trees. Once I have all the trees in place and growing well, I will not need to be inside. Columnar trees will not need much pruning and I can reach over the fence to do prune with loppers. For a regular dwarf, a slightly larger enclosure might be helpful but it depends on how you are going to prune.