Grappling, Piggyback rides, Coup De Grace, and Carrying Weights?

[tortor]

So.. Lets say you have a humanoid (lets say Orc) for an opponent with Str 20. His Lift off the ground weight is 800, meaning, if he "weighs" more than that, he collapses to the ground, unable to stand.

If you "piggy back" 4 200 pound PCs onto him, then conceivably he cannot stand, allowing coup de grace attacks, due to his total helplessness?

How would the grapple check to "piggy back" an enemy look?
Would the tactic of dogpiling him to the dirt work out?

[rmnimoc]

Here you go-


Joining a Grapple
If your target is already grappling someone else, you can use an attack to start a grapple, as above, except that the target doesn’t get an attack of opportunity against you, and your grab automatically succeeds. You still have to make a successful opposed grapple check to become part of the grapple.

If there are multiple opponents involved in the grapple, you pick one to make the opposed grapple check against.

Multiple Grapplers
Several combatants can be in a single grapple. Up to four combatants can grapple a single opponent in a given round. Creatures that are one or more size categories smaller than you count for half, creatures that are one size category larger than you count double, and creatures two or more size categories larger count quadruple.

When you are grappling with multiple opponents, you choose one opponent to make an opposed check against. The exception is an attempt to escape from the grapple; to successfully escape, your grapple check must beat the check results of each opponent.


Also unable to stand does not could as helpless, so unless you unarmed grapple attack to do enough nonlethal damage to knock them out, you can't coup de grace them.