Here is what I did in as much detail as I can write.
On the back of the eclipse hood there are two slots that are covered with rubber plugs. These plugs are very easy to remove and allow some access through the back of the hood to the tank.
Looking at the front of the hood the slot on the left I used to hang a power head for current and required no modification to do this.
The slot on the right was used for my seaclone but the unmodified slot was not wide enough for the skimmer.
The slot looks something like this /^.
But after modification the slot looked more like this /^^.
Basically all that needs to be done is to cut a small section out of the hood to make it wider.
I used a dremel tool with a cutting wheel to perform the task.
If you have any more specific questions just ask, I will try to help as much as possible.
Good Luck !!