i hope that they dont restock, but if they do, u still can sell the hash, and buy back S9,...to go to polo, is to buy alts not to lend BTC, then its better to go to bitfinex and long with margin BTC,...or to hold 50% btc and 50 in mining, but evryone has its own plan what to do, buy alts with profit, lend at polo, trade alts, to mine etc...but S9 is not long on the market and its 31-33% profit vs maintance, regrdless of what the kapital is doing (hashrate or BTC price) and with current price of BTC is even more profitable,... i still think that S9 will be proftable this year less then 50% maintance vs profits till end year, so any investment in S9 for a year (this year, still cant get u in minus)....
Yes, surely you can sell your hashrate when they restock... after 20% price drop. You can watch the chart, just see what happened on February 8. The market price dropped from 0.00016 to 0.00013 in minutes. I don't think you will be the first to sell unless you monitor their site every 5 mins. I expect an immediate price drop from 0.000118 somewhere to 0.000092 after restock.
At the current price, if you want to mine till the end (2020 halving or afterwards) you would better buy ViaBtc contracts - they have maintenance to payout ratio lower than 24% and already have "days to ROI" equal to 320 whereas at Hashnest this parameter is about 450. So Hashnest is not really profitable unless you sell your hashrate with profit before they restock (which is a real gambling).
