ASA and PSIA Instructor
Join Date: Apr 2000
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24 inches is a very common height for sailboat stanchions, I doubt you gain anything worth gaining by increasing it, especially as you will live daily with the awkward cosmetics of stanchions/lifelines that don't match your bow and stern rail heights,as it'd cost a small fortune to raise the rails...
Check the wish list for something with greater utility to spend this money on...