Can you share any of your personal Runescape knowledge?

My suggestion would be to use the Fist of Guthix fishing gloves. They are relativelly cheap to get and they offer double experience for some fishes (swordies or sharks). Taking into consideration the experience bonus you get from the gloves, I think it would make it a good alternative to fly fishing. Not to mention that if you decide to bank the fishes, you would get a decent ammount of cash at the end (or a fast way to increase your cooking skill). Since you completed "Shilo Village" you play in a P2P world, therefore I guess you should take advantage of P2P training, instead of using a F2P strategy. Good luck there!

Fly fishing is very common way of training fishing in Shilo village.
If I had so good fishing level i would fish there,
but fishing gloves is another good option too.

you should get 99 hunter next because it gives out the most cash.
just get about 6 box traps go to feldip hills and catch red chinchompas by 99 you would get about 20m

If i were you, i would work on mining and smithing. thet are both real rewarding, especially if you can enter the mining guild.

depends on you i think simthing mine is 64 and i sell mith armor but i cant afford membership im lvl 91(combat) and i like it so if you wanna do it with me add me im granddrag187

If you're rich do this:

Buy like 5k steel bars and smith them all into canon balls and then sell them!

You make profit! And earn lots of XP!

For fishing, there is no true way to level fast without just having a lot and I mean ALOT of patience. As you said just fly fish if you are a nonmember. You could probably though fish lobsters pretty fast at around 75.

As for Hunter, I am a nonmember so I can't really give much advice there.

As for Mining, not being a personal fan of it in over three years, what I advise you to do is to just mine coal at the Mining Guild.

Finally, for smithing, this mostly just correlates with mininng, so when you reach your desired level in mining just swap over and start smelting/smithing all that coal into mithril or steel bars.