Ken, since you mentioned you want even more leverage than the 2x/3x inverse ETF's, lets do some math (and someone feel free to correct me if I get something wrong).
Assume that to short the S&P, you're gonna use SPXU. Here we see the chart for Friday. Lets say you are lucky enough to catch the absolute bottom and buy on the low tick, and hold till the end of the day for the high tick. This means you gained 64 cents. Now I'm not sure what kind of size you're trading, lets say something like 1000 shares for this. That low tick is at about $15.35, so you need 15k in buying power. Obviously if you held for the full 64 cents profit, you made $640.
But we also need to consider what you're risking. Maybe you don't want to risk more than $200 on a trade, since I know you put on lots of trades, so with 1000 shares, you can only let these drop 20 cents before you'd be stopped out.
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So if we know you're gonna risk $200 on this trade, lets see what throwing $200 at options would get you. Lets say you will go all in on the 449 put (all in vs. buying a couple of different strikes). The low tick looks to be 14 cents, but lets say, just to be generous and make this example less ideal, you get them for 20 cents each. This would cost $20 per option, so if risking $200, you could technically buy 10 options. (not including commissions here).
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Now we see the value of this option go as high as 3.60. As in the SPXU example, lets assume you time this almost perfectly and get out for 3.50. This means you receive $350 per option, minus the $20 it cost you, so a profit of $330. But since you had 10, this means a total of $3,300. This is more than 5 times the profit of $640 for buying the ETF, without having to use 15k in buying power. Plus, the most you would ever lose with the option route is the cost of the option, so $200, and there is no guarantee that if SPXU dropped, that you could in fact get out for a loss of 20 cents per share. Maybe there would be slippage, or maybe even your psychology would tell you to hold longer, and lose more if you don't exit as intended. The option has a fixed loss if you assume that you will just let it expire worthless and hence always just buy cheap options.
Now clearly this is the most ideal example, and something as simple as just buying the option with more than 1 day till expiry will affect things greatly, but this is an easy place to start.