Pathfinder II
To add on to this, avoid going though Old Sluice, it’s arguably the toughest section of trail and there is a bypass that goes completely around it. This section is between Little Sluice (also has bypass) and Buck Island Lake. There really are few real bypasses in the trail. The 2 I mentioned are really the 2 primary ones. Then there are side challenges like “soup bowl” but if you didn’t know where to look you would drive right by it without even knowing it.