If you are being advised to get a sight mounted clicker, it sounds like your arrows are quite a bit longer than they need to be. That is not a bad thing, but shortening them for use with a normal clicker might mean removing so much that the shorter arrows are too stiff to match your bow.
An alternative could be a normal clicker fitted to a clicker plate. The plate extends the riser forwards so the clicker is fitted to it and clicks by striking it, like a normal clicker striking the riser. The plate can allow for a wide range of clicker positions, up to an inch or so beyond the riser. No good if your arrows are 3" beyond the riser at full draw, though.