What have you got against the anti wet device that ronnierockets devised?
Well... my opinion is that we have these old bikes for our enjoyment which should mean that we are keen to regularly start them up and ride them, if not then why hang on to them?
If wet sumping is bad and occurs in a very few days then there must be problems in the engine that need sorting. The fitting of a wet sump device is not a good subsitute they should never be needed. Of course a wet sumping of some degree does occur and I believe this is good as it means a very good lublication of parts down there below, the first initial starting is supposed to be the most wearing/stressful on an engine until circulation gets going, so I'm told. Of course starting a very heavily sumped bike does mean a risk of blowing gaskets and may cause other problems. (remember I'm not an engineer and other more experienced guys will advise you better)
Why not purchase one of those very good SRM sump plates with a magnetic drain screw that we have seen discussed here only recently? So easy to drain and return to tank with absolutely NO risks involved! I've read of too many 'bangs' due to oil starvation!
Ronnie's device does seem good but I'd rather save myself of all that effort and go for a simplier alternative.
On the odd occasion a bike, usually my red A10, has wet sumped heavily, even with straight 50 in, the bike has been fairly easy to start, probably because its worn. But my other A10, the blue one does not wet sump at all, this one having castrol R40 in. The Star Twin I am still running in and has Halfords classic 20/50 in and is fairly thin so will sump easily, it has been off the road for the last ten weeks due to the petrol tank at the chromers. But it started easily.