gettin ready to drill transducer holes

[toyguy]

for a Humminbird 565. But it occurs to me that maybe I should find out if transducers holes are universal.

What if I want to switch fishfinders (see the Sonar post)? Will I be able to mount a new transducer using the old holes? I haven't drilled yet, and this is falling under the heading of "measure twice, cut once".

Since I suspect that transducer holes are not universal, do I need to exactly figure out which fishfinder I definitely want beforehand?

I can always continue to use my portable transducer mount, if need be.

Tanks,

Toyguy
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