I believe you will find GPS chartplotting to be a huge advancement in your favor...

The ability to mark (and return to) productive fishing spots is invaluable...

And the advantage of safe navigation in less than ideal conditions is also a benefit of GPS chartplotting...

I feel that color/SI/DI and other advanced features are just toys and fun to play with...but GPS has probably increased my catch ratio more than any other "toy" technology I have...

Rickie