Looking back 5 yrs now after my initial post I think bypass is hands-down best way up Deeks. But for return I'd now favor Windsor col and down via Deeks lake / HSCT. Only issue is initial drop to the col as way is not obvious, specially if coming down that way for the 1st time. Anyone thinking about this, easiest way breaches the bluffs skier right. This is set of pics from below:
When I saw this site in the winter last year, I was sure there was no way up it. Luckily I had this and Ryans trip report saved to my phone and I was able to figure it out. I'm sure it has been flagged better after this year. If anyone is planning on doing it in winter, it's not terrible, just rather intimidating at first. Some photos below. Also went up through Old Bypass in the fall to the lookout at 1000 meters and it was a great, and fairly well maintained trail.