Originally Posted by Pete7
Just glue the normal sensor in the transom well using expoxy or silicone (yes I know the manual says not to use silicone sealant but it works quite well) Lowrance are quiet powerful sounders so will fire through solid GRP. We did this to the club dive boat as a temporary measure for an afternoons diving, that was in 1996 and its still there.
I stand corrected.......sorry JW!
I thought they had to be mounted in the hull, as normally (for the boats that have them) there is a pocket made in the hull specifically for the purpose. I didn't know your could use a transom transducer to shoot through the hull, I'll give that a try if all else fails!