Hi,I would think the only thing you would be able to test with any accuracy would be the sink rate.
I beleive you need more water to test a bait to see how it runs,I mean how do you test a glider that runs 2-3 ft left or right.I am lucky enough to be able to use a swimming pool at a local school which gives me a much better idea of how my baits run.
There is a company in the u.k that have just started making bait and they say that all there's are tank tested,Well all of the people who I have spoken to say they don't do what they say they do,I would imagine they use a similar tank.