Navitronics map SD card do I need one for hummingbird 595c

[flkeysaqua]

Do I need a Navitronics map SD card for a hummingbird 595c combo gps/depth finder or are the base maps enough I'm in the Flroida Keys and have lived here my whole life and the lowest I've found it was $375 on Amazon new not refurb any recommendations on different models And should I go with transom mount hull mount or threw hull which scares the hell out of me just thinking about cutting a hole in the bottom of my 73 19-6 never owned a fish finder only gps I have is a handheld but thinking of upgrading and this looked like a good deal for the options any feedback would be appreciated

[GoneFission]

The Navitronics cards are awesome!  You bet all the markers, buoys, fish attractors, etc.  Way more usefulness that the built-in map the comes with the 595.  Keep an eye on the specials with West or BassPro - also check out eBay - lots of SD cards there:

http://shop.ebay.com/items/__navionics- ... Z15QQ_scZ1

See ya on the water!

[DOCREED]

Navionics makes fishing cards as well. (Fishing Chips) They show alot more bottom detail and bathy lines than the Navionics regular navigation chart cards.

Any outboard boat can use a transom mounted transducer.  With a low powered fishfinder, there is no gain with a thru hull transducer.

On a small boat with a relativley thin hull, you might try a glue in transducer.  You will loose surface water temp and speed thru the water with this type of transducer, but no holes anywhere are required.

[flkeysaqua]

Thanks for the input but for those prices I'm hoping a friend of mine will have the one I need I can't see spending 200 bucks on a chip I might have a change of heart once I get the system If I go with the hull mounted transducer will I lose alot of clarity I guess is was I'm wondering and what if I went with transom mounted instead of screwing the cable down couldn't I 5200 it inplace?