The main use of this fish
finder is just as depth display to allow some scouting of the anchorage to check the depth around the swing circle. It will also answer questions like "is there enough depth to move and anchor
in front of the red boat"
Maybe I can even anchor in front of some cats
Surprisingly for a cheap fish
finder it picks up the bottom detail quite well. I am wondering if it also has some application locating the anchor. On the depth sounder
display the anchor itself is difficult to distinguish from a bit of weed etc on the bottom. On some occasions the anchor will be completely buried so this would not work at all (although with the big roll bar on the Mantus
that will take some doing)
However I have a small float permanently attached to the anchor. The float sticks up a meter and half , but remains underwater. The idea is to make the anchor easy to find if the anchor is completely buried or covered by tall weed.
The float shows up on the fish finder display and being away from the clutter on the bottom it is easier distinguish than the anchor itself. I am wondering if it possible to choose a float that is particularly reflective to the depth sounder
acoustic beam. A very strong return would help distinguish the anchor float from small fish etc. To motor
the dingy around and quickly find the anchors location with just the fish finder would be useful.
I gather the fish finder picks up fish mainly from the return from their air bladder so presumably an air filled float would give a better signal. (The current
float is a foam filled fishing
net float). Andrew Troup had the great idea of using a strong metal float that could be snagged with a grapnel and used to pull the anchor out backwards if it was caught. The two ideas would work well together. If the anchor float could be easy found with the fish finder it would be easy to catch with the grapnel.
So what type of float would show up best on the fish finder? Does anyone know?
You can see the existing float on the right of the picture attached to the roll bar of the Mantus