My brother has a 17' Boston Whaler and we are considering upgradeing his fish finder. He currently has a stand alone Garmin GPS so we don't want a combo unit. Any suggestions for a fish finder that won't break the bank. Money is tight this season.

Thanks in advance for your suggestions.

check witrh seatronics in glostah. they got used stuff..they got a website too but i can't think of it now?