Just to let you know, jet drive systems require more horsepower to achieve the same output.
A "20 Hp jet drive" is actually a 35 or 40 horse power engine.
Honda's 60 Hp jet drive is a 90 Hp V-Tech engine.
I only bring this up to outline the need for a boat that can support the weight of a jet drive, it needs to be able to support a larger engine than a prop drive.
Anchoring in current is not dangerous, if you're anchoring in "anchorable" current. That's not as redundant a statement as it seems.
I truly think owning a boat should require a "driver's license" type study and test. Even kayak, canoes and float tubes require SOME seamanship.
If you're anchoring in current that can swamp your boat as soon as the anchor grabs, then you probably should go under and earn a Darwin Award. Sorry, that might be a bit ... harsh.