1) Triple Captain
The simplest and probably least powerful of the three chips, the triple captaincy allows you to triple your captain score instead of doubling it. Conventional wisdom has been to use this chip in a small DGW when only two or four teams have DGW fixtures and not in the larger DGW.
This allows you to get 180 minutes from your captain pick (assuming he is not rotated), which not only means more opportunities to pick up points, it also means that the lowest you can score is 12 (4*3) and it also allows you to rack up double bonus points.
However, there is a case to be made for using it in a plum single gameweek fixture – Salah scored 57 points against Huddersfield at home last season, the same amount that Aguero did in Manchester City’s double gameweek. This is more of a gamble as simple probability dictates that the more minutes your captain is on the pitch, the more chances he has to register FPL points.
Effectively, this chip allows you to field 13 players (10 + 3* captain pick) in any given gameweek. If your chip strategy requires deploying a chip in a single gameweek, this is definitely the one.