It is enough to mark the tx as without RBF and the winner gets it all!
Stop spreading bs.
This is not bullshit, as some others users already mentioning, Doesn't matter if you mark it with or without RBF, the transaction always can be repleaced and that only depends of Node configuracions to accept it or reject it.
The only safest way to move the founds is ask to a miner if they mined your transaction without broadcast it (previously to the block begin mined), also it is even better if you are a miner and you include the transaction without broadcast it before it is mined.
Thanks Alberto, then I have to sell the key to the miner who bids the highest.
Whats the best way for me to prove that I have the key, without disclosing the private key and public key to a miner ?

Address = 13zb1hQbWVuYdZoAkztVrNrm65aReL2pYD
Message = I own this address
Signature = HxSDzJj3BhS8lh7qoU1L9zJsymorFkJv8/roi8o6+269PEDPr8psAE1QEOerWAWKv/ypXss7hhXEe0FutUR4b0s=
https://bitaps.com/signatureI am still curious to know if someone is able to crack these signatures as well
Thanks Alberto, then I have to sell the key to the miner who bids the highest.
Whats the best way for me to prove that I have the key, without disclosing the private key and public key to a miner ?
There is no safe way to do that, even signature text messages include the public key.
Can you crack and post the PVK of that signed address??