Somewhat stumped by today's prompt. Had never heard of 'vispo' before although I am aware of concrete poetry. Googled term and found most veered between what I recognised as concrete and others which were very colourful illustrations of a poem. So I've opted for something not concrete, slightly visual, focussing on the word 'Blocked' to create my poem Writer's Block. I've used 'clocked' in the idiomatic sense of being noticed. Right or wrong, haven't the faintest - but I had a go!
A writer - I think that says it all.