Events at IS have different "stages". Each stage requires a rod. The first 2 stages are free. Anything higher, and you need to pay 3k gold or 3* to unlock each additional stage. Do not attempt without maximizing the stages.
Each stage has only 2 fish you can catch. For example, in a 3 stage event, the first stage has 2, the second stage has another 2, and the third stage another 2. Of each of these 2 fish in each stage, there is often times a big fish and a little fish. The big fish will always be the target.
If you do not have at least 2 star rods higher than ot, you will most likely become very frustrated in maximizing your rewards and achieving high rank scores. All star rods from vb and higher, normal or rare, give 1110 points when cast. Ot is 1010, ssf 910, twilight 810, etc. Gold rods have a maximum of 910 points so it is advised not to use them if possible.
There are 4 ways to earn points listed in order of importance:
1) fish type and size
2) rod type used
3) perfect cast every time
4) speed in killing the fish
Luck seems to play a big part in placing at IS. Bait varies in its reliability as does chum. The best thing to do is keep practicing and use high end star rods. The rewards are great when you can achieve 3* and get IS boxes. Rods, costumes, bait, pearls, etc.
Good luck and happy fishing!!
Posted by dinkdink