Closed Flying machineness

(I know this is my second one today but it's for a diff thing so....)

As some people may know there's a gap between islands on classic, I am here asking if someone who is decent at flying machines in 1.8 to help me place a block (prob cobble) in the middle of said gap.

~ Pil

Code:

I think i'll try to get my 2 alts in a island
chain  because the way I'm planning to do it requires to be trusted
on the 2 islands that the gap is in-between.

EDIT: I got my alts beside each other!

 

I think I used to fill this "gap" using a sticky piston with cobble and a lever

 

You think you can get on in the next hour or so?

 

I can give you some grass and diamonds but unfortunately do not have the other stuff on your list.

 

I just trusted myself on both of the islands and could build a thing in between them: