newest desperate measure: barge surfing

so I didn't see step into liquid....yeah yeah, whatever
but how exactly do you get to the waves off a barge? jet-ski? just wait in the middle of the channel?
this one is rather far-fetched. There are lots of car carriers and barges and tankers going by near me, but I have a feeling that the guys think I'm like a terriorist or something.
and what can be expected of wave size? I know its depending on the size of the ship, but average?
but how exactly do you get to the waves off a barge? jet-ski? just wait in the middle of the channel?
this one is rather far-fetched. There are lots of car carriers and barges and tankers going by near me, but I have a feeling that the guys think I'm like a terriorist or something.
and what can be expected of wave size? I know its depending on the size of the ship, but average?