Convert arrows:
25 arrows at lvl 1
12.5 arrows at level 2
8.33 at level 3
6.25 at level 4
5 at lvl 5
Now, imagine, you spend 4 skill pts for convert arrows. You can only convert ONE arrow type. At pickpocket lvl 4 you can steal ANY arrow type.
Uebereil, I'm not telling you you should learn pickpocket - but I'd not spend precious skill,pts on converting one arrow type, if the same amount of skill pts in another skill would be of more use IMO. You can choose to put 4 skill pts into archery instead, or arrow spec - and simply buy the arrows you like to shoot.
Green => poison arrows.
Kiya