Firstly, every business or investment have it own risk involving but i will advice you to be more careful because the EOS betting dApp had a hack issue last year and I'm not sure if it totally safe now.
Aside that, I believed setting limit and stick to it via match betting is the best/easier profitable betting strategy.
Good point. I read about some of the problems EOS has had. It seems like a pretty 'messy' blockchain right now, if you know what I mean? It does feel like it has some way to go before maturing re security flaws etc.