How can I fix this crack???

My first thought on fixing/making it good nuff about the crack was spray some expandable foam behind it and carve away any you don't want there.
 
drill a hole at each end of the crack,then use what ever your are going to use to repair the hole with. Might be able to repair with fiberglass?
 
I bought the $25 roll of tape.
It's definitely not just plain duct tape.
I'm trying to think of a decent test for it vs other tapes.
 
We got duct tape for air raise roofs . Super tough and sticky .
The poor general public has little access to the good stuff .
 
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