GTA carp fishing tips

[bettercallsaul]

I was wondering if those of you who fish for carp could offer some tips, as I've been out numerous times last year and have gotten skunked (but seen others catch them, so I know they're there). Corn on hook or a hair rig? And would it be better leaving your spool open? If so, what is a good homemade bite indicator (I've been thinking of tying on some colourful string, seems the easiest). Would it be best going early morning, or is the bite good in the afternoon during the spring time?