THEME:   magazine names starting random phrases   
GOOD ONES:     Financial magazine tracking device?   FORTUNE COOKIE   
Rolled-up news magazine drifting at sea?   TIME IN A BOTTLE [pretty big bottle needed]   
Pot boiler   STOVE [not a good read: potboiler]   
Drilling gp.   ROTC [I thought dentists]      
BTW:   Pleasant surprise   TREAT [yes, but treats are too often not surprises]      
Back in the day   ONCE [I prefer ONCE to "Back in the day" --- probably because back in the day "back in the day" did not exist.]      
Final: Abbr.  ULT [I don't know who if anyone uses ULT, but I do know that with three simple steps ULT would not be needed:  
UNTO>UPTO; 
LEON>SOON; 
TOSS>NESS.  That would mean that Down we would have USN [Navy] instead of ULT and POE instead of NEO.                 
RATING:    
 
 
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun