I bought a used 2003 stratos 185 and who ever had it before me took the bow and dash sonars out and replaced them with a humminbird 525 in the bow and a lowrance x96 in the dash.When they installed these they were to large to put under the panels on the boat so they siliconed them down to the panels makeing a mess.If I order new sonars for my boat what would be the best way to mount them.I am planing on puting a lowrance x126df in bow and 520c in dash.