jfish,
When one first tries to fish wingdams, I have two pieces of advice.
1. Try to pick a day when there is a light, upstream wind, say in the 5-15 mph range. This really makes the ripple line stand up. When the wind is howling downstream the ripple line is not visible and this makes it much more difficult to find the wingdams. Precise boat control really helps fishing success on the wingdams and obviously this is much easier when one can see the ripple line. The ripple line is always just slightly downstream of the peak of the rocks. Upstream boat wakes can also make the ripple line stand up for a few minutes. I often “throw” a wake upstream over the top of the wingdam so I can see it then zip around to the upstream side to fish it. This works well if you know the general location of the wingdam but need to pin point it. Obviously be careful not to crash into the rocks when doing this. This leads to the second point.
2. If your depth finder has a shallow alarm, use it! I set mine to about 3-4 ft. The wingdams come up real quick but this often gives me enough warning to back off or at least kick the motor into neutral or raise it up. Some wingdams have enough water over the top of them that it’s not a concern but some others are just inches below the surface, especially now with the low flows.
I know there’s been a web site address given several times on this board where one can find the US Army Corp of Engineers river maps. This shows the location of the wingdams. Some of the wingdams that are shown on the maps have slitted-in and no longer really seem to exist.
Boone