The last sock that I knit required you to pick up an extra stitch between the gusset and instep as to close any holes that might appear. Can you do this even if the pattern does say it, and just knit an extra row in the gusset.
For example, the sock I'm working on now says to pick up 20 sts and work rows 1 and 2 on the gusset until I have 16 sts left on each needle. Could I instead pick up 21 sts and work rows 1 and 2 until I have 16 sts left on each needle.
If that's not a good idea, how do you close up the hole that appears at the top of the heel/beginning of the gusset?