I suspect it would work - if I only had a Vasa, I am 100% certain I could complete a race swim of even IM distance without difficulty with zero pool time, but without any pool time, I definitely would not bet on getting a PR or "A" result.
I suspect that I'd lose significant feel for the water with zero pool time, and that would cost me, even if my pull power and cadence were better; I unfortunately don't have any hard evidence though whether the gains on a Vasa would offset the loss of water feel, but it's hard to deny how important water training is, even if it's only a sprinkling.
As well, a large factor will depend on how good a swimmer you were before starting and how ingrained your pool technique is before the Vasa. On the bright side, I would consider my swim technique 'subpar' at best, being an adult-onset swimmer self-taught with no talent and almost no coaching, and if my technique is good enough to make gains with the Vasa, it's likely that it'll work for the majority of triathletes who aren't total water noobs.
Judging from what I'm doing now, even 30 minutes of pool time every 2 weeks would be enough for me to continue having the gains I'm making now on the Vasa.
However, if you literally have zero pool access, I can't think of anything remotely close to working compared to the Vasa. There is not a single person on any forum of any sort who has posted about successfully using swim cords alone and then with zero pool swim, had better results than if they had simply done nothing at all, and definitely no person who has commented about any sort of working swim cord program with minimal pool time who has actually improved their swim. I'll also report that for me at least, my big fear about losing water feel and thus speed, was definitely overblown judging from my results so far - I'm finding you really need only minimal pool time to reap the gains of the Vasa training, and the gains are real both in pool and OWS. (I did zero OWS prior to Vineman, still legit PR'd the swim by 2 minutes, which for me is huge.)
I suspect that I'd lose significant feel for the water with zero pool time, and that would cost me, even if my pull power and cadence were better; I unfortunately don't have any hard evidence though whether the gains on a Vasa would offset the loss of water feel, but it's hard to deny how important water training is, even if it's only a sprinkling.
As well, a large factor will depend on how good a swimmer you were before starting and how ingrained your pool technique is before the Vasa. On the bright side, I would consider my swim technique 'subpar' at best, being an adult-onset swimmer self-taught with no talent and almost no coaching, and if my technique is good enough to make gains with the Vasa, it's likely that it'll work for the majority of triathletes who aren't total water noobs.
Judging from what I'm doing now, even 30 minutes of pool time every 2 weeks would be enough for me to continue having the gains I'm making now on the Vasa.
However, if you literally have zero pool access, I can't think of anything remotely close to working compared to the Vasa. There is not a single person on any forum of any sort who has posted about successfully using swim cords alone and then with zero pool swim, had better results than if they had simply done nothing at all, and definitely no person who has commented about any sort of working swim cord program with minimal pool time who has actually improved their swim. I'll also report that for me at least, my big fear about losing water feel and thus speed, was definitely overblown judging from my results so far - I'm finding you really need only minimal pool time to reap the gains of the Vasa training, and the gains are real both in pool and OWS. (I did zero OWS prior to Vineman, still legit PR'd the swim by 2 minutes, which for me is huge.)