Ok so while I have been trying to get to get to grips with sailing my Cheshire cat (2913) single handed i have found clearing water after a spill challenging. I can already hear the not again groans! However i have read shed loads of advise on here so am happy to plug away with that one. This did get me thinking about floor modification! Not for 2913, that would be sacrilege! But for 3120, a tigress bought cheap for spares but to good to break. After minor fettling its now solid, but no show winner having been renovated then 2packed for durability not aesthetics. A peculiarity of this boat is that it has buoyancy tanks under the gunnels from just behind the shrouds to the transom. I have no intention of fitting a full double bottom as I like my knees, however i understand it's previously been done leaving a gully at the bailers so effectively having fore and aft tanks. Does anyone have any experience of this and it's effectiveness. Many thanks Dave.