I spend a lot of my outdoor time where suitable hang spots are rare - high desert plateau & beaches/lakes. If you have allergies DO NOT hang from Juniper/Cedar which produce an insane amount of pollen virtually year round ... don't ask how I know this .
There are a number of great posts of DIY stands on this sight. I myself have one I made using 2X4's that's in my yard using these examples which works great (many thanks to those that took the time to engineer & post these easy to understand projects). Then there's the store bought stands that are similar in principle but use powder coated tubular steel instead of lumber such as the often recommended "Vario" (I think that's the brand name), which are often seen used indoors since they are not quite as bulky but cost 2-3 times more than a DIY lumber stand.
These stands are fine if they are placed on a relatively flat surface. I've been wanting something that can be assembled/disassembled quickly & easily so that it can be transportable by truck, car-rack or boat & can be used on irregular or sloping ground.
My computer crashed so I cannot post drawings of the plans for my idea right now. The idea is a design similar to a swing set with the "A" frame vertical poles being set with a slight pitch inward from bottom to top & the legs being two 4'-6' pieces, the lower portion sliding within the other with holes drilled at intervals with a cotter pin to hold it thereby allowing for adjustment to different elevations in terrain while keeping the horizontal load bar & suspension connection points at proper height & relatively level. The top load bar will be 2-3 pieces for a total length of 14'-16'. The key component to this is the two end connectors or knuckles that the top load bar & "A" frame legs slide into making the the system compact for transportation but rigid enough to withstand the forces applied with a hammock with a big body in it. It might also be necessary to have a support bar with a quick attachment system between each top vertical "A" frame leg for stability & rigidity.
I am currently researching cost and if I can have this done complete for under $200. I will do it and post results with instructions & pictures. What I want to know from those of you with better engineering minds than I is; will this work? I have seen 1 or 2 similar concepts, albeit simpler construction & materials, on this site in backyards but with little background or follow ups to assure me this is a good design. I like the pros but are there any cons? I know, I can anticipate the comments now ... go ahead try it & let us know how it works out but I am not a DIY guy and have no interest in wasting money on something that's not going to work as anticipated. Appreciate your input and promise that if I make the commitment I will post a details here. The exciting part is if this does work it can be replicated in aluminum reducing weight and improving durability to weather especially salt water, but also increasing the cost substantially - the blueprint would be the same.