2

 

I say 1 row. It saves time. You can harvest 2 rows faster if you do one row at a time.

 

Since they are not instant break, 1 at a time is faster. You immediately start on the next melon that way.

With 2 rows at a time, you break the melon, then start on the one behind it, then switch to the other row, wasting a bit of time with every switch.

 

Also multi-taskable.. :)

 

1 row. Also get macro and copy an online autominewalk script for an easier time. Either with or without still 1 row tho

 

http://www.minecraftforum.net/topic/467504-152-macro-keybind-mod-099-and-liteloader-for-152/

There. Follow liteloader install directions then put macromod.litemod in mods folder. Then follow setup instructions. (first result on google when you search 'macro mod')

 

2 rows really,