Well this really depends. Lets say you have a quality hand... and as a result you bet preflop... 3 times for example. On the flop if you wish to continue, by making the same bet, you arent likely to scare the guy away since their is now an actual pot to fight for, so if your
bluffing usually its a considerable amount, but if your trying to make him call, you have to figure out what the guys limit is, and this is something that you had to be looking for in the past 50
hands. Once you know this limit, you can bet the ideal amount that will ultimately not look like your trying to fish him, but not big enough to scare him off. Good luck at the tables
.