I installed a Johnson lever (backstay lever) on my Lancer 25. We trailer her every time and we step the mast every time. We step it forward so the backstay is left attached while the roller furler is detached. The lever is opened; the mast is raised and pushed past the rake angle slightly which allows the furler pin to be installed. Then the lever is closed and pinned. Voila’! The stays are tensioned. Granted, tuning the rigging is more or less out, but many (most?) of us trailer sailors are less concerned about tuning and more interested in sailing. I recommend this to some of you other folks. I got it on Ebay for $35 but I’ve seen many out there from $50 to $90, depending on the size of the boat.