1. To activate: Go to the spanner/wrench on your tool bar.
2. Look down the list and tick "Dim out non relevant items for tools"
3. You may leave this as a permanent setting, if you so wish (I do)
4. All items that you are not going to harvest, fish, chop etc will now be dimmed out.
5. Select your tool.
6. If you select the fishing boat, everything else will be dimmed.
7. Start fishing, the water that you are fishing suddenly disappears...it has no more fish.
8. Go to next piece of water and repeat until all the fishing has being done.
9. Select the next tool from your box and continue.