I've tried to find a solution for that although it fullfils a slightly different objective. I've created a curation trail that would vote on 10 posts every day containing the Leo tag. Now with my main account I follow this account with 2% Hive upvotes. I have a vote multiplier of 50. Like that using only 20% of one Hive vote I can give 10 full Leo upvotes on autopilote. If I want to make some manual upvotes, I simply reduce the vote multiplier for Leo accordingly.
!ENGAGE 20