If you already have the ability to sail independently (i.e. NSS level 2 for adults or YSS stage 3 for juniors) you can try organized racing on Thursday evenings or simply go free-sailing when stewards are present (including Saturday and Sunday afternoons).
Due to the current Covid-19 restrictions, you will need to book into a free-sailing session on the club calendar in advance. This requires you to either have your own boat or to have been allocated a club boat for a block of time (you can request an allocation here).
In normal times the weekend free sailing sessions run on Saturday / Sunday afternoons (1pm-5pm) and you can just turn up and sign yourself in.