FishHunter
New member
I’m replacing a 1980s Koden 50/200 and DFF-1 50/200 with a DFF-3D + 165T-CM54, and a TZTouchXL + 566-TID HDD & 455T-PR903.
Appreciate any insight on transducer selection & placement. Boat is 47ft aluminum with 8ft draft with 25deg deadrise which makes things more complicated.
Usage is salmon seining, limited bottom fishing (Sablefish & Halibut), and Tanner Crab in Alaska. DFF3D for bottom structure & mapping for seine snag avoidance and PGB, and bottom discrimination from TZTouchXL for ground fishing. Siidescan for anchoring and snag identification under 100 feet (and recovering the occasional lost anchor, yes, this has happened already). Dream would be a WASSP/DFF3-UHD setup but that’s WAY out of the budget for now (about 5x the cost of this). Everything integrated with TimeZero Pro with PBG & DFF3D plug-ins.
Future upgrade path if would be C599LM, then DFF3-UHD (or TZTouch3 with DI-FFAMP), then WASSP (in that order).
Current plan:
Any advice or best practices from other prior installs? I'm familiar with the importance of wiring/grounding the DFF3D correctly. I'm still on the fence about the 455 vs 225 kHz sidescan but want best image quality possible to 100 feet depth in salt water sometimes with sediment. I've toyed with the idea of installing both 455 & 225 and using a switch to change between modes.
Appreciate any insight on transducer selection & placement. Boat is 47ft aluminum with 8ft draft with 25deg deadrise which makes things more complicated.
Usage is salmon seining, limited bottom fishing (Sablefish & Halibut), and Tanner Crab in Alaska. DFF3D for bottom structure & mapping for seine snag avoidance and PGB, and bottom discrimination from TZTouchXL for ground fishing. Siidescan for anchoring and snag identification under 100 feet (and recovering the occasional lost anchor, yes, this has happened already). Dream would be a WASSP/DFF3-UHD setup but that’s WAY out of the budget for now (about 5x the cost of this). Everything integrated with TimeZero Pro with PBG & DFF3D plug-ins.
Future upgrade path if would be C599LM, then DFF3-UHD (or TZTouch3 with DI-FFAMP), then WASSP (in that order).
Current plan:
- 165T-CM54 into aluminum tank on keel (will cut open and remove the 50/200 dual Koden elements which are currently installed there) - marked in red
- 556-TID HDD in tank (will need to resize to fit with 165T-CM54), or with fairing block (but I haven’t identified a good location due to the 22deg deadrise, interior machinery, and exterior keel coolers) - possible locations marked in yellow
- 455T-PR903 (or 225T-PR904) near bow above the sounder tank - marked in green
Any advice or best practices from other prior installs? I'm familiar with the importance of wiring/grounding the DFF3D correctly. I'm still on the fence about the 455 vs 225 kHz sidescan but want best image quality possible to 100 feet depth in salt water sometimes with sediment. I've toyed with the idea of installing both 455 & 225 and using a switch to change between modes.
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