I wear a small hairline piece but I don't really expose it and I mix it in with my own hair so theres little chance of anyone knowing. I don't blame you for not wanting to expose your hairline completely, I would be very concous of my piece if I did that, but some people on here have it down to a fine art.

You state it can look like a wall of hair, not sure how old you are but you might think about maybe thinning it out more.