Tacking Down Long Floats
To prevent long floats that can catch on fingers and distort the stitches, floats should be no longer than 1” (2.5 cm) long. If a float needs to span a wider distance, it’s best to trap or “catch” it with the working yarn to keep it snug against the back of the work.
To trap a long float against the back of the fabric, insert the needle tip into the next stitch on the left-hand needle, place the nonworking yarn over the right needle (Figure 1; nonworking yarn is dark), knit the stitch with the working yarn as usual, then lower the nonworking yarn (Figure 2) and knit the following stitch as usual. Do not catch the floats between the same two stitches on subsequent rows or you may produce an unintended vertical “line.”