Just a bump on the BluTack method for anyone who hasn't tried it. I have been using it since first reading the link on this thread.
I've found that my record weight is just lower than the platter when sitting on the plinth.
Since I'm a "stop-the-turntable-to-flip-the-record" guy, I just put the weight (with a strip of BluTack stuck on top) on the plinth, lower the needle, flip the record, lift the tonearm, put the weight on and play side B.
At first I saw a lot of little dark specs where the needle had touched the BluTack, but after a while there is generally just the pinhole.
It has become part of the ritual.