Firstky glad you like it
You don't have to have any logging of any sort, that stuff was added by request so folk could monitor things...etc. The FULL list isn't exhaustive and there are many missing off it, denying bots/spiders is a personal thing, just use the names of those that you don't want to see your site (if you are using the full list remove DA and Custo as these may cause issues with real users), remember you are banning bots/spiders by user agent and what you see in WOL isn't necessarily in the UA, if you go to WOL and then chose the option for displaying useragents aswell it will help you.
I personally ban:
Yandex
Yeti
Youdao
Sogou
SoSo
Baidu
spinn3r
psbot
SBIder
exabot
speedy
omgili
wget
Amongst a few others, like i said, you can ban agressively as you like
EDIT: You can use the automatic option of redirecting each spider/bot to their own IP address instead of redirecting to a site!