Finally bought a new foil after having the slingshot h4 for a year and a half....which I continue to enjoy. Whilst the new one is lighter and does feel smoother (it's not slingshot...a bit less mainstream brand....but an sold retail....not an alibaba job), there is a fair bit of water in the mast.

The supplier stated, after I noted this to them (the slingshot had none), 'we recommend you drain the water after every session'.

As I've not used that many different foils (2), is this fairly common or, given the leaps and bounds in design, should this be a red flag Many thanks, Steve