If your Helix has autochart live I would use that with a zero lines card instead of creating maps with one of the programs. It takes the same amount of time to cover the water thoroughly but then you're done. The program takes quite a bit more time to create the map. If you're into the computer work, really want the additional overlay features or want to make chips for other units the program is definitely the best choice.
As for the lakes you want to fish, liveshare is very spotty. I'd go to the site and see how well they're mapped.