How can one tell the difference between East Coast and West Coast actors...

... apart from circumcision 

Zabladowski, the Schroder version of "APT PUPIL" isn't available on dvd or vhs, unless it's someplace quite obscure.

According to imdb:

In 1987, Rick Schroder was originally cast to play Todd Bowden in Apt Pupil ( 1998 ). This first attempt to film this story ran over budget and was stopped. It starred Rick Schroder and Nicol Williamson, and was directed by Alan Bridges.

In actuality, this began filming in 1985.... so imdb isn't 100% accurate on the casting date.

Hence, the film was made, but never completed.  Wonder if the actual footage was tossed?  Or if it's in a warehouse someplace?  Or if a film could actually be edited and produced out of what was shot?

The director is 79 years old now, and hasn't been at the helm of a film for 15 years..... so contacting him would probably be a fruitless venture.    

Maybe information could be weaned from the Production studio itself..... if it still exists.

I struggle to tell the difference between a Canadian and an American accent...  I can pick a Southern accent of course (they stretch out vowels to the limit) and sound a bit slow... and I can pick a Brooklyn accent but that's about it.

Most Americans can't speak English anyway   

We Americans may speak with a variety of accents.
Having lived in the US south for a dozens years now, let me tell you there are variations in the way people speak from state to state and even regions within a state.  There is no single "southern" accent.  I, myself, have been accused of speaking "California," which some define as "no accent."  It seems to me that in its self would be an accent.  Everybody speaks their language with some kind of accent.

One thing about us, however:  we speak English differently thoughout the US, but at least we can all understand one another.  That's often not the case on the Island of Great Britain.