There's really no way to speed up the process of levelling - it'll take hard work and determination to reach 99 Fishing. There are several different strategies that may or may not be beneficial to you, like:
-Catching on Salmon and Trout after level 30; until level 99.
-Fishing Tuna and Swordfish after level 45; until level 99.
-Using Daemonheim Dungeon's fishing areas; they are rich in EXP points.
1 month
It depends how long you are on Runescape.
Fish Salmon & Trout in shilo village to 99.
To get your fishing level into the high scores you have to be 1 of the top 2million people on runescape to be ranked on it. say for instance there are 1.9999m people who has 99 fishing and 1 person with 98. you would have to get 99 to push that person off of the rank and take his/her place....
Power-fishing at Shilo Village is great for fishing experience.
depends on what your cooking
about a week.
less than 3 months
as long as you want baby, i can go forever
The length of getting 99 defence on RuneScape depends on how you train it, how long you train it for etc. You should be more specific. Ex. Do you mean non-stop?
4-8 hr
Quite a long while, depending on where you train.