a year or 2 ago, warbird, on this site was working on an 18' tigercat to make it a planning cat

he felt that as it had the required flat rear he could make it work. the tigercat being a 2 man boat was over powered and threatening to trip over it's bows so he was shortening the mast and mainsail to get the power lower

he's gone quiet of late but a search would find his posts on the matter