See all posts by Kevin Godbold You may have heard of Haynes Publishing (LSE: HYNS). The company is responsible for those workshop manuals with lots of pictures that help you strip down and repair vehicles.In years past, we could fix just about anything on a car with a Haynes manual beside us. But with the advance of technology, fewer things became fixable by keen amateur mechanics. Lift the bonnet of most cars these days and you are often confronted with an engine block that looks and feels like a sealed unit – daunting, to say the least!5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…And a few years back, Haynes looked like it was on its last legs with a business that didn’t seem comfortable in the modern era. As an investment, I remember the firm didn’t look appealing to me at all.A remarkable turnaroundHowever, Haynes staged a remarkable turnaround. In the words of the directors, the company has delivered a “highly successful” strategic transition over the past five years moving from being an “iconic” manuals publishing business to being a “leading” supplier of content, data and innovative workflow solutions for the automotive industry and motorists.Today’s half-year results for the period to 30 November demonstrate the point. Overall revenue rose by 4% compared to the equivalent period the year before. However, year-on-year revenue from digital operations moved 18% higher and now constitutes 60% of all revenue.Operating cash flow is 17% higher and the net cash position on the balance sheet improved by a whopping 100% to £5.2m. There’s no doubt that the finances are in good shape. The firm has moved a long way from the days of paper manuals covered in oily fingerprints. Indeed, the sectoral section of the report reveals to us that around 90% of profits came from the professional market and just 10% came from consumers.Stunning shareholder returnsYou can see the progress in the record of trading. Revenue has been rising since 2016. Profits handbrake-turned in 2018 and have been shooting up since. Operating cash flow began ascending during 2017. If you’d bought shares in Haynes near the bottom of the trough on the chart in mid-2016, at today’s 416p, you’d be up almost 300%.It seems clear to me that Haynes reinvented its business and rose phoenix-like from the ashes. However, I wouldn’t buy the shares today because in November, the firm announced that it was putting itself up for sale. My suspicion is that a takeover premium is now already baked into the share price.However, I think the investing principle is a good one. If we can find down-on-their-luck companies emerging with a credible turnaround plan, we can often buy the shares before the shares shoot up when the plan starts working . Other good recent examples include FTSE 100 supermarket company Tesco and mid-cap leisure operator Rank. Choose well, and I reckon situations like this could help make you rich. Enter Your Email Address Forget the FTSE 100! I reckon small-cap shares like this could make you rich Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool. “This Stock Could Be Like Buying Amazon in 1997” Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Our 6 ‘Best Buys Now’ Shares Simply click below to discover how you can take advantage of this. Kevin Godbold owns shares in Rank Group but not in the other shares mentioned. The Motley Fool UK has recommended Tesco. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. Kevin Godbold | Thursday, 30th January, 2020 | More on: HYNS I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Image source: Getty Images.