I have never used a 705, but by all accounts it still suffers the same drawbacks any other vlf would. Given the right conditions in the right hands is it possible yes. It's it easy no. Its reflected in its price, and honestly pre pi it would stack up. The reality is it's much more suited to general metal detecting as opposed to gold. Gold detecting is a specialized pursuit and having the best machine suited to the task will go a long way to helping out. I sometimes think the manufacturers pay on the idea is like fishing and any rod on a given day will do, sadly this is far from the truth. You're in with a chance putting a coil over the right spot but I'm not here to sell false hope.