Nice, Dutchy.  I've been thinking about making something similar and thinking about the design.  I would like one a little longer but I wonder if it would really suck in that much from the far end so i was considering putting a grill  or something at the hose end at least that would help extend how much air has to come in along its length and especially at the opposite end.  

--Nathan, TX. Hire the lazy man. He may not do as much work but that's because he will find a better way.