McLube Sailkote.

www.mclube.com/sailing-boating/

STOP STOP dont put anything on your mast yet!.
I f the mast hasnt been anodized then work it down with wet and dry to 1500 grit. then use electrical silicon spray to stop reanodizing. . always store your mast and sail indoors of course . Im assuming your washed and dried it as soon as you got home to stop corrosion

Hill, not sure about spraying on your mast. Sailing, we spray it in mast pocket and in mast track, that's about all we do.
Fortunately for windsurfing our masts are coated, either Ali or carbon fibre.
I do know it makes a hell of a difference when derigging at end of the session getting the mast out. Need to keep it away from the boom clamp area as this isn't the best place to have it, so its used sparingly.

just spray the mast with electrical siliconlube. big can , cheeper price, same thing, possibly better quality.