>> I am looking for the most conservative option strategy that will allow me to swing trade equities without having full exposure. The problem with traditional money management is that stop are tough to implement in a market that can have huge overnight gaps. >>
There's no cut and dried answer because there are a lot of variables involved, not only on the option side (time, strike, IV, strategy) but on the equity side as well (swing trade length, avg gain per trade) as well as the net of both (risk/reward).
The first question that comes to mind is what do you mean by conservative? Low in cost? High in protection? It's A or B, not both
>> Is there such a strategy that allows you to limit exposure to equities and does not kill a trade with theta burn and expiration? Or am I asking for something that isn't possible according to the risk/reward model? Are LEAPS the answer? >>
"Are LEAPS the answer?" suggests that you're considering long puts. If so, the first consideration is cost vs protection. If you want maximum protection, you buy ATM and pay top dollar. If you can tolerate some downside, you go down a strike and pay less for your insurance but risk more underlying loss.
If you're dealing with ATM LEAPS, they will tend to hold up better than short term if the underlying rises (salvage value) and more so at lower IV. If you're dealing with OTM LEAPS, they will not tend to hold as well as near months. Check the respective deltas and you'll see why.
Other possibilities include bearish put spreads below which will cost less than outright long puts but will not help much with "huge overnight gaps", over written calls or bearish call spreads above, and the collar. Lots of possibilities and lots of variations all of whose selection will have a lot to do with the volatility of the underlying as well as your success to the upside (size and frequency of gains).
I would tend to lean toward trading clean and being green by the end of the session. If your set ups run longer (days) then I'd lean toward collaring the position near the end of the day in ordr to diminish the cost of the protection... as long as you're willing to achieve a profit with an AM gap up but a limited one.
Another possibility is pairs (which I do) but in order for that to work, you have to figure out how to correlate the underlyings.
Oh and don't forget, you can trade any component of a hedged position intraday (preferably the underlying) and restore it by the end of the day.