Here's an great 7 minute video from Red's Fly shop on an excellent method to obtain a better dead drift with your nymph on the bottom of a strike indicator.

“This overhand style mending gives you the control you need to slowly drive the indicator where it needs to go.”

Video is available at : https://midcurrent.com/videos/drop-mend-for-strike-indicator-fishing/?goal=0_8efbf3b958-f3e6149268-42789169&mc_cid=f3e6149268&mc_eid=9ff7f7ed4c