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A LOT of people have had problems when trying to use the boat's fuse panel ..... intermittent connections problems, other loads, insufficient wire size, etc

You can install a Blue Sea fuse block...

There are alternatives to filling the bilge with water .... https://support.norcrossmarine.com/hc/en-us/articles/203052318-How-do-I-glue-the-transducer-in-hull-

You could do that .... or just use that block at the battery to power a fuse block at the console as James ....Fishfood .... suggested. He does a lot of installs and knows what works.

You could consider putting one of these at the battery ...... size the fuse according to your total electronics load.
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