As a fencer myself, and a long-time member of Northampton Fencing Club, I was delighted when they accepted my proposal to redesign the club's website.
The site includes a secure membership database, with a fairly sophisticated (but easy to use) bulk e-mailing feature that allows Committee members to target various parts of the club membership (e.g. coaches, juniors, Committee members, etc.) to receive e-mails.
The site had a drastic impact when it was deployed in late 2015 - 50% more people signed up to the January 2016 course than had signed up for all 5 courses that had run in 2015.