Dear SD team,
Using the tablet in portrait position, the lateral space for displaying the Pilot Log is limited and each additional column reduces the font size.
When disabling the "show wind calculation output" under PLOG settings, the columns for magnetic heading "HdgM" and for "Time" will be emptied, but the columns themselves remain displayed - this unnecessarily narrows the other columns and their font size.
a) emptied columns should please be hidden. This allows a larger text (font) size for the remaining columns. 
b) If I decide to ignore wind corrections, I still like to see the TIME.
c) if you argue on b) as being inaccurate or even dangerous ... fine ... in that case I would like to have an option to hide the "HdgM" separately and independent of an activation/deactivation of wind corrections (I am not sure, but I think it has been possible in earlier versions).

Using a Samsung Tab S 8.9" (SM-T700), Android 5.0.2 and SD version 3.6.5
Thanks and Best Regards

The whole point of the "show wind calculation output" option is to make certain columns blank, but NOT to hide them, as the option is for people who wish to enter their own values in those spaces.

If you want to hide columns, there are options to control column visibility separately. Reducing the font size is a reasonable thing for SkyDemon to do if the user has selected more columns, and a larger font size, than will fit in the space available.

Sorry, I may have mis-understood your requirements but if you want to hide or show a particular column clicking the "Columns" button at the top of the PLOG allows you to add and remove them  If you are wanting to change the printed output on a PC then try opening the preview and clicking "Settings > PLOG Colums" 

Ash

Agreed -  I like no wind and just the anticipated time i.e. using the block speed with no wind.