I have a fcv585 Furuno fish finder. Soon to be installed in my 27ft CC. This boat has a 24 degree deadrise. Recently I spoke to Jeff Lantz a Furuno tech who suggested that i use a TM transducer model TM258 by Airmar. Jeff felt the sharp deadrise of 24 degrees was too high for an in hull or thru hull tranducer. Because my boat is dual powered he suggested I post to Furuno and ask for assistance as to where to mount the TM transducer for best performance. Jeff said I could possibly post a picture of the stern. Please advise, thanks, John.