"in ira, no borrowing and no unlimited risk trades, that's the law."
As shocking as it may seem ERISA doesn't mention any strategies. Tasty used to advertise that they allowed naked calls in tax-qualified accounts, but no firm likes it as it's difficult to automate and the pseudo margin makes it uneconomic. Policy sure, but the only thing in ERISA that touches it is borrowing.
Policy will make it nearly impossible, but it's not currently illegal. Generally, it becomes uneconomic based on the requirement.
If it's genuine interest - query your prospective custodian.
Even Schwab allows cash-secured short puts in qualified accounts, the economics suck.
ERISA which is the template doesn't directly cover independent IRAs, but it is the common standard.
"in ira, no borrowing and no unlimited risk trades, that's the law." - Hardly true. Futures have unlimited risk, and yet they are allowed in IRAs.
Lots of misinformation in public forums.
Also, brokers typically have restrictions on FOPs and options in IRAs, but not in other self-directed qualified retirement accounts.