gruntbrain wrote:The Concept2 is indeed a top notch cardio machine. However, many do not have access to one or waterways where real rowing can be done. Using some of the aforementioned rope/band/webbing gizmos provide for a useful compromise.
BTW, the COncept2 works well as an Ab Wheel &/or Power Wheel
I'm right there with you on the compromise part. It's the useful part I disagree with. DIY rowing machines will be hard pressed to produce the equivalent cv/muscular challenges as C2 rowers or actual on-the-water rowing. The beauty of C2 is how well it captures the on-water rowing experience. Almost every crew uses the C2 for off-water training, this is no accident. You'd be much better off running hill sprints, fartleks & doing the types of db/kettlebell exercises previously posted. Another exercise worth trying requires a high bar/tree branch. From a squat, jump up and grab the bar, pull up, repeat.
I'm not saying you can't or shouldn't DIY a rowing machine. I am saying you can achieve the same training results without breaking out the tool box to rig a kinda-sorta machine.
BTW, I remember you recommending using the C2 seat as an ab-wheel. Good call. It's a bit easier using the C2 seat for the roll-outs, something those progressing to the standing ab-roll out should consider.