things wrong in that spreadsheet: Magic Xp rate is infinite because you do NOT need to waste time training Magic, not 400k. Cooking Xp rate is 720k, not 700k. Construction Xp rate is 800k, not 750k. Prayer Xp rate is 950k, not 1000k. Fletch Xp rate is infinite because you do NOT need to waste time training Fletch, not 1000k. The sheet is designed to work with any combination of stats, thus people with 200m wcing will not get free fletching xp, so the fletching xp/h is needed. If however you have enough time to get 200m fletching before maxing WCing the function will know that and you will do 0 hours of fletching. The same holds true for magic, so those two rates are needed. As for the other xp/h's you can squabble over that. I can see your point. But you can train fletching and magic while wc/fish/cmb/hunter/farming/agil without losing Xp in that skills. I guess you understand what I mean with this. EDIT: Even if the player have that skills maxed, it's possible (atleast I can do it) to fletch 30 bolts per tick. That would be 210 xp per tick with adamant bolts. And... 1260k xp/h