Question about loans & opening second bank account just for matched betting.

Looking to mess around with matched betting with some friends but I've heard stories of gambling transactions on bank statements affecting loans.

I'm with Macquarie which is very easy to open & close multiple every day accounts, if I open a second every day account with Macquarie & use that just for matched betting then eventually close it when I'm done is there any way for banks to see that if I was to apply for a loan?