A couple things to consider,
water friction in corrigated pipe
ask about a connecter made for the pipe,I think youd be wasting good ducttape.siphons will not tolerate an air leak.glue it.
how will you get it started,a pump at the discharge end to fill the pipe?
how will you get all the air out of the corrigated pipe?
turning the discharge end up a little will help prevent air from running back up the pipe and killing your siphon.
if you go with pvc get 20 ft sticks,that way you dont have to buy couplers,and you can put a 45 at the discharge end.Mine is set up this way and works pretty well.
Hope I gave you some food for thought,hopefully someone has tried it and can chime in.Dont know what to say about pipe collapse,moving water can be tough at times.
... and then thers always the beer and dynamite method,just kidding.
