Lots and lots of posts on tabs of various styles fitted to various boats including most Warriors.
Do a search and take your pick about who's opinion you'll run with.
My own opinion is that a proper set of adjustable tabs are worth their weight in gold at adjusting a boats lateral or longitudinal trim.
A well designed boat shouldn't porpoise unless worked to the relative extremes of trim or conditions. If your boat is porpoising then perhaps there is something not quite right and whilst tabs will help AND be a huge boon fo their actual job you may find an easier fix.