Literally the only safe bet I can think of to avoid other botters is runecrafting, except that the prices of runes are down...
Mining is extremely hard to do, so if you do i highly recommend the resource dungeon in the dwarvin mine (level 15 dung)...
Cutting yews is the worst way to go I bet. So many people bot yews because it's the easiest to make money from because its fast to get there. I bot on a level 47 RC and a level 66 mining accounts before i touch the level 63 woodcutting account.