I'm not sure where you want to mount it but for the price the Raymarine A65 is a bargain these days. They used to sell for $1,500+ just 6 months ago but they're being discontinued for the A70 and now you can buy the unit with the DSM sounder (sold seperately) for $650-$700 total. They're such a bargain now I'm tempted to buy another head unit just as a spare.