[Jack Hydrazine]

If they can stabilize the deck on the Z axis they’ll be successful.

[spokeshave]

Just capture it with three remote controlled helicopters towing a huge net.

[amorphous]

They should give up on the barge idea and simply land it on a remote landmass, or better yet, the same pad it launched from through a redesign to increase the first stage glide ratio? There would be a number of advantages to the latter.