That is not a very strong way to do it. A skarf joint would be a lot stronger. Of course you would have to have the skill to do it. A spline would be way better than dowels. I guess if you keep the butt joint under a claw it might hold up over time.Searched and someone on vdf did a straight butt joint with small dowels and got good results. Only tacking an inch of the diameter so it should not be too much strain on the hoop.