Well, to avoid bulky stitches, you can just use both strands when you pull the loop through the stitch being worked (it will look like three loops on the hook) then just YO with the working yarn and draw through to complete the SC.
I did leave out the crochet terms in my instructional previous post.
* Hook below, behind, then over working yarn, this make a YO wrap that you may pull through a stitch being worked (pull up a loop) or pull through two or more loops on your hook (to complete a SC or larger stitch).
Insert hook through the stitch to be worked:
* In crochet you may be told to skip stitches, no worries, you just move right past them and put the hook through the stitch indicated by the instructions or pattern.
Pull up a loop:
* Put hook into stitch, YO, and pull the working yarn through stitch to make another loop on our hook.
(This connects the last stitch on your hook to the next stitch to be worked, starting at the bottom and building up like Lego blocks)
Crochet stitches vary in height, like a stack of Lego blocks.
SC is 1 block (or 1 chain length tall).
HDC is 2 blocks (or 2 chain lengths tall).
DC is 3 blocks tall (or 3 chain lengths tall).
So, you could work a tail in with your working yarn for pulling up a loop and then just YO with the working yarn and finish the SC. This would minimize the bulk and you likely wouldn't see it.
Alternately you can hold the tail along the top of the knitted stitch to be worked as if that stitch had two strands. When you SC in the stitch the working yarn will wrap around the stitch and the tail at the same time and you are weaving in the tail as you crochet the edge. This would be the least visible in the finished stitch.
I hope this helps.