Hook Reveal 9TS

[carpcatcher]

I just recently put a hook reveal9ts on my boat and spent the week in the thousand islands area. The contour map that is already on the unit leaves a lot to be desired. I would like to get a micro sd card to put in it with better contour maps. Can anyone give me some advice on a good brand and model chip for the area up there? 

[chinook35]

I believe you will have to buy the C-map discover North America to get the charts you want  

I had the same unit  used it for one season and bought a Garmin. 
Good luck