When my wife and I first got together some 25 years ago, I didn't have a guitar. I had lost them in a divorce. When she found out that I played, she bought me one for father's day. It was a laminate Oscar Schmidt OG 2, which I still have. We added a under saddle pickup so I could play at church, but the sound was bad. Real bright, no lows. Even an acoustic amp didn't help much. So I bought another guitar. Now I have several. But now to the point of my post. I want to add a preamp/eq and was given a good quality unit that requires a hole to be cut in the body. I've seen several videos about it and they have shown several ways to cut the hole. I just wanted to get other opinions on the best way to do this. Thanks in advance.