BEAVZ,I FISH BP AND DOCKS AND I MUST SAY THAT THE ULTREX WITH CABLE AND SPOTLOCK IS THE BEST FOR THIS,AS FOR FRONT DEPTH FINDER ,A GOOD DI AND 2D AS BIG AS CAN AFFORD THAT IS NOT TOO BIG FOR BOAT IS BEST WAY FOR FRONT UNLESS YOU ARE PLANNING ON TROLLING,AND AS FOR DI WHILE SETTING OVER BP IT STILL WILL DO A GOOD JOB OF TELLING FISH FROM PILE AFTER YOU LEARN IT ,YOU CAN ALSO SEE FISH ON EDGE OF PILES WHILE 2D MAY NOT SHOW IT.IF I WERE TO PUT SI ON FRONT ,THE UNIT WOULD HAVE TO HAVE DEDICATED DI OR I WOULD NOT DO IT,HAD A 998 UP FRONT ,NO TRUE DI, SO I GAVE IT TO GRANDSON AND WENT BACK TO DI AND 2D UP FRONT