My Experience as of today:
since I have some vision issues related to moving objects and I am so keen on to do this achievement I tried to count the number of fish in sections according to the speed of the boat, so to plan which ones I can miss and the ones I should aim. Spamming and targeting failed so planning is better I believe.
There are around 48 to aim for.
As everyone mentioned above:
- 40 stacks are needed for the achievement and each fish is =1 stack.
- Aim the same fish again upon respawn immediately, it will sure count.
- The timer resets if u fail and start again.
- This Achievement must be completed in one run.
So here are the numbers according to the speed.
- First spot has 12 (Slow)
- second 1 @ waterfall (Very fast) + 9 (Above Medium Speed)
- Third 12 (Medium Speed)
- Forth 5 (Above Medium Speed)
- Fifth 5 (Above Medium Speed)
- Sixth 4 (below medium speed)
Currently I am stuck @ 30 and trying to complete the 40. But I really hope the above fish count would help.