Using Bookmap with Smart Money Concepts (SMC / ICT Concepts)

I use large institutional orders from the Bookmap SI indicator in order to enter my SMC (Smart Money Concept) trades. I wait until we are in a high probability area for a reversal and then let the large institutional orders / players tell me where THEY enter a trade so I can decide if want to piggyback on that order. Why not use the info we have about BIG money and their orders to our advantage?