Will, Liberty made sure you can't look down the barrel. You have to hold the switch to run it and the outlet is too far from the switch.

Bruce, here's a link giving some specs. on a particular brand. They should all have similar specs. if designed for the same market (RVs) so yours might be similar. They claim 350' with the right hose and staying within the lift specs.

http://www.emptythetanks.com/order_online.htm

I don't think many look into the 3" hose either.

JIM