Im just saying my experience OP, It may not contribute
How much have you made so far investing in casinos?
Didnt intend to invest money on gambling sites because i dont have enough huge amount of bitcoins
What site would you recommend to you closest friends?
If they like dice sites then go for PD or Bitsler , if they like sportsbetting, then sportsbet.io is good
What do you feel is a smart amount to invest in a bitcoin based gambling casino?
Dont have any idea but it would make you feel your profits if you invest huge amount for sure.
When do you feel the best time to pull out your investment is?
When you saw that you didnt gain profits on consecutive months.