Minitubs almost finished

Reminds me of the time I paid a buddy to do some tile work for me. About 3 days later I tore down evrything he did and redid myself. I never told anyone that I wans't happy with his work or even told them what they are seeing is not his work. I value my friemds.
There's no doubt I would be in that trunk right now cleaning that coating off if it were my car.
Hushmat or similar on those inner wells will kill a lot of road/tire noise and I expect you would cover the entire well rather than just half like he did.
Once thats done your friend doesn't need to know how many hours you spent cleaning in there.