what are your goals? Do you want stregnth? mass? If you reacted well on your last cycle strength-wise, and strength is all you want, then there is no need to increase your dosage. You also need to look at other factors, like your diet, your excersise and sleeping schedule. Where you getting ATLEAST your maintenence calories in? Where you eating at 1.5x your body weight in protien daily? assuming all these factors were on evel keel, AND you would like to increase in size, then I would advise increasing your dosage. Otherwise, change those other factors, and not the dosage of drugs.
I also personally think 50mg of Dbol's is too much.