I was telling my wife the other day how the world and modern technology has left us way behind. I am not sure when this took place. I used to think I knew something about anything that interest me.......WRONG......I don't know about cellphones, texting,clouds, string theriories, black holes in space. and especially sonar technology. What little I have picked up was through trial and error. I am sure I will never understand and be able to utilize the unit to its maxium capabilities. Having said this , I am having fun trying to interpret the information my unit is trying to convey. Trying to read the sonar and not use fish symbols,interpreting the infomation being shown and putting this information to use is a real challenge. I guess I am to far behind to catch up, but its fun trying. Reading this forum has been a great learning tool......Everybody keep up the good work..........Thanks....crappie1133