There are no stupid questions except the ones not asked. The only reason I can see for ear plugs in the water is if you have a problem with ear infections. If you do add the ear plugs though you will have a harder time hearing light signals from the detector and you might miss some good targets.Yea stupid question but better to ask than not :-) figured water in ears and such.
Curious you guys use earplugs with them or not?