Here's the deal Pj. Betting "offshore": has it's risks. I assume you are asking the question because you are not close to a sports book. Honestly, that is hard to imagine these days but I'll assume you are sincere so I'll answer. I live in Reno, Nevada and 'have access to major casino action 10 minutes from my home but I'm lazy! I prefer to play poker and bet in my PJ's online.
I have been burned more than once but Intertops and BOL (BetonLine) have always paid off and the checks cashed. Americas Card Room has a sports book which I like because they release lines as early as possible. That is HUGE but I requested a check a few years back and once I received it was drawn on a account that was closed. Overdraft charges followed and although ACR made it good the hassle and time consumed pissed me off. They seem to be more stable now so we shall see.
Welcome to PG and I hope this helps!
coddfish