Y style cinch

My buck strap on my black Rhino doesn't fit around my Percheron. Instead of getting a new strap, I'm thinking of getting a "Y" girth; a girth having a main girth and then two additional ones coming off from the center going back to the buck straps.

Sorry about the convoluted description; not really sure how else to explain it. Anyway, has anybody used one, or have opinions about it? Thanks