I am going to be digging my trench to bury the insulated pex I have for my garn tomorrow. The company says to bury it below the frost line to minimize any movement in the ground. The frost line where I'm at is 48" deep, do you guys think it's necessary to go that deep? Side note for anyone thinking about using this stuff. Do it in the summer when it's warm out. Holy smokes is this stuff stiff. Hopefully tomorrow's 55 and sunny forecast is right and I can muscle it into the trench alright.