The "start" for this route is the summit of Crystal Peak. Use any route to the top of Crystal Peak. This can also be reversed as a way to summit Crystal Peak via Father Dyer.
This is the easiest route on Father Dyer Peak. From the summit of Crystal Peak, simply walk on over to Father Dyer's summit. This way to the summit avoids the difficulties of the eastern routes.
One Way Mileage: 0.6 miles
Elevation Loss: -400 feet
This photo shows the easy ridge from Crystal Peak to Father Dyer Peak
Just hiking gear.