The trick alone does not decide the choice. Set the bait and see if the curve remains free, if the tip is not closed and if the leader forces the hook to stand unnatural. No 18 is logical at a more compact bite, while No 14 leaves more room for a more voluminous feed; No 16 is the intermediate option when looking for balance.
In a non-contiguous model, control after detection comes from constant contact with the fish. Keep the line tight and don't allow a sudden slack around the landing net because there's no barb to compensate for the slack. The hook with barb has a different release behavior, but in both types, the sharpness of the tip and proper tying are more important than the habit of using one size everywhere.
Consider the leader with the fineness of the whole rig, not just the strength you expect from the hook. A light float, delicate bait and a rough end section work in different directions. For deeper water or further feed, check if the bait remains stable after the cast, instead of automatically switching to a larger number.
Before fishing, gently push the tip along the nail; if it slides, change the hook instead of relying on a stronger detection. After the outing, remove the bait residue and put the packets dry, with clearly separated dimensions. The most common mistake is to use the same hook for each bait without looking at how the whole rig stands in the water.
From the particular float hooks I would switch to Hooks, when I want to compare the group without limitation to one fishing approach. Carp fishing hooks gives a parallel with the carp direction, while Float fishing accessories returns the selection in the context of the other accessories around the selected rig.