I have a straight drawknife (bought off amazon), which has been quite useful in the past when I have needed to reduce toe thickness and/or blend the spine into the toe. I would just chop off the unnecessary spine/toe and then smooth it out with an orbital sander.
now, I have a bat that feels a tad heavy, and I just wanted to trim the edges down towards the toe. would the above approach work? I.e. I take the straight draw knife to the edges, and then smooth out the resulting kink with sandpaper?