humminbird upgrade options

ok so I already have two humminbird ff's a 343 and a 561... lookin for one with gps on it and was wondering what the general consensus would be for one... don't want to change my transducer so it doesn't have to be a si or di model... 

If you are insisting on Humminbird to keep your transducer, A 386Ci Combo will get you color with dual beam and GPS for $300. Anything more than that you are looking at upgrading to newer technology imaging that would require a different t'ducer.

Which transducer do you have?

Got the scupper hole one... know alot of folks dont like em but for now it works... only time i regret it is in the sound on a rough day. 

That would likely be the XTH-9-20-P.

You can make a plastic washer that will increase the drainage rate of the scupper.  Just cut a 60 degree notch out the washer and position it over the scupper lead.

https://dl.dropboxusercontent.com/u/54098312/kayak/FF.GPS/transducer.html