Originally Posted by boathik
If as you wanted to learn about options beside the P66....look into the thru the hull B60.
About $70. more than the P66.
Not hard to install in most hull types.
Same element paramaters but of a higher build quality as it is brass vs plastic.
But there is an an advantage in that it it is running in cleaner water and Airmar states it has an advantage in that regard.
You have spent good money on a quality system ...not a bad idea to top it off a little higher quality transducer.
You get what you pay for with transducers.