Dialing in on whitefishes

[tweedwolfscream]

This is an ice fishing question but I know there are some regulars on this forum who are good at it.

I might get to bore an early morning hole or two on Oxtongue Lake this weekend. I have no electronics but I have a depth map, in fact there's a PDF of one on this forum at http://ontarioshorefishing.com/forum/Thr...ongue-Lake .

The reason I'm posting is because everything I read online about locating whitefish seems to contradict each other. Shallow? Deep? Drop-offs? Flats? I get that they sit low in the water column, but how deep a water column, and over what kind of contours?

Also, I say "whitefishes" plural because there are both lake and round whitefish in the lake apparently. But I can't find any info about targeting round whitefish. Is there a reason they're less discussed? Are they much harder to catch? Do they pattern similarly to lake whitefish?

Any help appreciated, not just for this attempt on Oxtongue but in general.