My old oval hole beach guitar is actually amazingly...made from solid wood. The neck has been reshaped a bit so it suits my hand.
In looking atnthe construction I hink one of the main reasons it doesnt speak that well ($150 used) is the top and back braces are more like structural timbers. In order to get in there and resape them I would need to carefully open the hole to D hole sides.
Any thoughts as to what factors to consider to changing hole from oval to D??
The Magic really starts to happen when you can play it with your eyes closed