Acoustic guitar straps can lead to more discomfort and inconvenience for you if you intend installing them on light guitars. Because light guitars are easy to handle and can be moved around quite readily, the fact that it has a strap will often be overlooked. In such cases, the strap will be a nuisance accessory that can get your neck entangled when you try to pass the guitar on to someone else and forget that it has a strap. Another thing we have to look out for when using strapped, light guitars with a bulky headstock is the tendency for the guitar's headstock to drop down if you are not holding the neck. To prevent this, the portion of the strap that touches the shoulder should have a coarse surface that will hold the strap in place. The width of the strap for a light guitar is significant.
For heavy guitars, be careful not to use thin acoustic guitar straps or they will be eating into the flesh of your shoulder before long. Besides being a great discomfort, this can affect the veins and other blood vessels located on the shoulder and prevent the proper flow of blood through them. The aftermath of that situation is that you will quickly experience weariness and muscle pains from playing the guitar. The rule is that the heavier your guitar, the wider should be the straps. It might even be a good idea to line the insides of the strap with spongy material so that the shoulders don't absorb the entire weight from the guitar.
For adjusting the length, use acoustic guitar straps with slots punched into them. The length of the strap depends on which slot you inserted the opposite end into. Metal buckles used to be popular. These straps work in the same way as belts do. However, metal buckles won't scratch your waistline, but they can scratch or even damage your acoustic guitar. So always look for a slotted strap for your guitar.
If your guitar doesn't have the devices, called strap buttons, for holding a strap, attaching the acoustic guitar strap to your guitar is something you shouldn't attempt to do yourself if you haven't done it before. These strap buttons are found at the bottom of the guitar and at the base of the neck. If you don't have these buttons on your guitar, the first thing to do will be to ask your vendor how to attach strap buttons. Because installing buttons will involve screwing them in place into the wood, this operation will require some experience to pull through without damaging your guitar. Most vendors have strap button installation services that you can avail of for a small price.
In some cases, people don't place buttons at the base of the guitar's neck. Instead, they tie the acoustic guitar strap under the steel cords at the headstock, above the top fret of the guitar. Doing this will minimize the need to punch holes into your guitar and if you tie the straps tight enough around the area, this kind of attachment is stable.