Doug: Which part goes bad on the road trips. The transducer or the knotmeter? Are we talking removal of the transducer for road trips or disconnecting? My knotmeter went dead and the new one I installed to replace it was just as dead, but I didn¹t replace the old transducer....yet. That doesn¹t look like something you would want to do everyday. I use a GPS to determine speed, but that gets corrupted by current. It would be nice to know both the actual speed through the water and speed over ground. I installed my depth transducer right behind the knotmeter transducer, and maybe one strake down. I used silicone caulking...just make a little puddle and press the transducer into it. It reads fine shooting through the hull, and it¹s easy to move if you want to. Just scrape it off with a putty knife. That would not work if the transducer involved has the knotmeter wheel on it. Those are almost universally mounted off the transom...even on those 70mph bass boats. Howard