We are looking at options for a new fish finder/GPS/transducer combos for our 25' Super Panga here south of PV (Barra De Navidad). Any recommendations? We mostly target Dorado, Sails, and Marlin on the troll (up to 20 miles off-shore) but want to get into more bottom fishing and inshore stuff. Our budget is about $500 USD and we are picking it up in the USA. Tight lines!!!