Weird solution I use for added security is I edit one of the characters on my hot wallet's private address. For example you can replace one character with a random letter and just remember to swap it out with the proper one when redeeming it. If anyone were to stumble upon my paper wallet, they wouldn't really be able to claim anything with it without that knowledge.
If they somehow found out that the owner uses such a method of protection it would be trivial to access the funds of such an address.
Bitcoin private keys have 22 to 52 (compressed/uncompressed/casascius/etc.) characters that means after a maximum of 2907 combinations (51*(58-1) + 2) the attacker would gain access to your funds.
I would devise a different method of protection, e.g. make a sentence that is as possibly random as you can, take its first 22-52 characters, look up their DEC ASCII table code and shift each character of that private key by a corresponding number. If one of the letters in that sentence is "m", the number is 109, 109 mod 26 = 5, the new letter will be "r". The attacker will still be able to find out that your private is invalid due to the checksum but he won't be able to access your finds given the knowledge you are sharing on a public forum.