Dux rigging and Forestay Tesnsion

[Brian Duff]

Ok,
So we all know Dux creeps. This means that any tune you put on it will evenetually 'bleed off' to slack.

How then , do you propose to keep forestay tension? I have always set up the rigs with either an adjustable backstay (or runners on frac rigged boats) or with foiless headstays that use halyard tension to set luff sag.

Who has thoughts or experience on this issue?