Not sure making one out of wood will be a good idea. It will be tough to keep the weight down. Out of all the guys I’ve muskie fished with or seen out muskie fishing, I don’t believe I have ever seen anyone with a home made wooden muskie box. If you added wooden dividers down the middle of the example you have, to make the most use of the inner space, that will get pretty heavy before you put in your baits. And this still doesn’t have a cover on it. If you don’t want a cover, I would be concerned about water/rain getting in it. Even the Just Encase boxes made from plastic get heavier than heck. Now if it is a custom box made from wood that stays in the boat and could be used as a casting deck extention, that would be cool.