Despite appearances, this theory has very little evidence to back itself up with no real scientific evidence to suggest that a bridge is even possible, although granted that the majority of our working knowledge comes through trial and error. However, even the propnents of a "d-bol bridge" admit that complete restoration of LH function will not be achieved until one is completely off of all compounds. With that said, it is unlikely that a "bridge" will help to maintain muscle mass while you are able to recover both HPTA and LH function. The only solution is to come completely off all substances and run a proper post-cycle therapy.
Without question increasing size and strength is this steroids primary nature but like many steroids it can serve secondary purposes apt for other goals. When the individual is dieting a good Dianabol cycle can aid in maintaining strength levels as they commonly drop when in a calorie deficit; further, like most anabolic hormones Dbol will preserve lean tissue. For the competitive bodybuilder this steroid can absolutely be used during a diet but we wouldnt recommend it at the tail-end due to the high aromatase factor. It is true, the Methandrostenolone hormone is perhaps not the best anabolic steroid for dieting purposes but if it is what you have available it will more than get the job done and the good news for you is this steroid is generally cheap and widely available.
We understand a Dbol only cycle is a bad idea on the premise of maintaining any gains; on this basis it's simply not an efficient type of cycle. With that in mind, there's only one question; what is the solution? As your body needs time to adapt, you must allow for this time to occur, but since you cannot supplement with Dianabol indefinitely you need another option. For this reason, your total cycle must extend past Dbol use; in-fact, the initial Dbol use should be conjoined with another anabolic steroid. For example, your cycle will start with Dianabol and an injectable steroid; you will complete six weeks of both and then continue the injectable steroid for another six weeks or so. For this purpose, you will find nothing better than a simple testosterone compound; you will gain the size and strength you desire and with a cycle that carries an extreme high level of toleration for the healthy adult male who supplements responsibly.