This is the plan for mine once I get some extra $$ to spend. The Genright stuff seems to fit well.
There are a couple of other companies that make similar stanchions, although all of them didn't seem to compare. One brand bolted on the dash locations similar to Genright's but it doesn't tie into the floor. The other brand(s) that did go to the floor didn't seem to tuck into the side of the tub and stuck out just as much as running a tube all the way down.