Open enders using both your cards have more implied odds than flushes as they are well conceled. There are more implied odds in position as well. If you are playing a really tight/nit player you probably have more implied odds as well since they will show up with a hand more often. Against an aggressive opponent you usually have less implied odds but more fold equity so raising draws is better than chasing.
Typically its not a great idea to add too much for implied odds as most people love to chase and convinced themselves implied odds are good enough. If pot odds
are close and you have a good idea he has a big hand then fine, you can add some, but dont start thinking, well if I hit I get his whole stack and therefor plenty of odds.