Dude it always, trust me, lands near the table between chest and the northern support beam its always in that vicinity.... I have rwt'd this way 30+ times..
Hmm i have found that it is always the first balloon north of the table.
Have done 73 plates this way and have lost 1. (Stupid noob) was hunting me down
i bought an account for 55 rune plates all random but i wasent paying attention. i lost 3 though. E\if you dont pop the ballons will the item show up or dissapear?