Here's what rhymes with powerflow.
low flow slow throw row lo fro ro thro yo floe roe yeux rho throe sloe no so know go though show co blow grow snow pro tho fo foe glow ho bo doe dough mo po toe wo woe crow hello tow beau ceux faut goe hoe jo ko sew soe vo aglow beaux cho dau mow noe sho zo bro stow trow whoa doh schmo schmoe although below ago overthrow quo overflow chateau folio bio forego forgo tableau uno escrow outgrow siglo tableaux tuo chateaux chapeau oleo tarot deathblow foreknow kayo chapeaux borzoi resew ratio radio plateau audio bestow buffalo stereo nouveau polio propos aliquot dicho rodeo topos dunno plateaux trousseau adagio kapok piccolo turbot overgrow regrow gateau fatso gateaux pekoe trousseaux romeo embryo studio patio bungalow calico dynamo vertigo apropos cameo domino mistletoe spatio afterglow bandeau matzoh tallyho portfolio undergo indigo portico medico presidio oregano pistachio undertow pompano mustachio microdot politico impresario braggadocio pianissimo moustachio archipelago generalissimo