for strength gains, taking it all before the gym is likely going to yield better results
for size, spreading it out is a no-brainer. If you do some math, which I personally hate but it call for it...half life of dbol is roughly 4 hours, take 50mg first thing in the morning, half that every 4 hours and by the end of the day you have almost nothing in your blood. Spread that out over 3-4 doses and its active much longer. Considering the main action of juice is increasing nitrogn retention, the longer its active the more you grow as you eat all day long