When placing long rows (or large areas of blocks) I just use the row I’m placing as the guide rail to keep me in a straight line. I mush myself up against the row, and position myself so that the next block i place is slightly ahead of my feet between me and the row where I wish to place the blocks- blocking my placement cursor. Then I hold down the trigger and move forward. The instant I move past the last block I’ve placed, the next one is placed, keeping me running slightly into the row (but never past) that I’m placing and away from the other edge.
I use this blocking technique a lot actually, and you can control your speed by angling slightly more or less into the row you are placing (perfect for when you reach the end of the row or stack in hand).
I guess this may be something that works best with the xbox controllers I use on my PC- those sticks drift so easily that even when you think you’re holding it straight you probably arent… but you should also be able to do this with mouse and keyboard in the same manner.
It’s especially helpful when building pyramids as I always have a row to lean against and it allows me to place rows as fast as my block placement speed will allow (with guild buff, correct stats, and fast brew I can sprint and not miss any placements)