I am new to using a router and have never used a bushing before. There is no holes in my baseplate or bushing adapter and the bushing guide all combined to completely obstruct the view. Is this intended to be a "route by feel" process? What is the best way to practice using template and bushing so I don't make a mistake when it counts? I am making a new top for my table saw and want to make zero clearance inserts from a template so I can make them again later as needed.