I have a new to me Pathfinder 2200XL which as a 997 on it. My previous PF 2200V had an 898 si on it. I was able to hold bottom up to about 40MPH with that unit. Anything over 10-15mph I loose my reading on the new boat. Some one said they were able to purchase a shoot through the hull transducer that worked with there transom mounted side imaging transducer. I checked the HB web site and I don't see anything that says it is compatable.
There claim was the shoot through started working as soon as they exceeded the speed that the SI transducer would work on.