Your car does not drive straight?
You feel like you are constantly fighting to stay in lane.
Have tie rods checked and get wheel alignment.
80% of the times this is the reason car feels like a boat.
First qiuckshift is about quickshifters.
If skiled you can shift without clutch.
Using clutch or misshifting is time lost.
If gearbox doesn't spin output gear so rear wheel does nothing.
There are quick shift kits to buy online.
Get one.
Simple.