React-dnd: Using DragSource and DropTarget on same components but no response from DropTarget

Sorry to possibly use this as more of a help forum, but despite great efforts I am unable to get any response from the DropTarget in this use case.

I am wanting to use a series of 'category cards' that can register drop events onto themselves.

Am I making any glaring screwups here?

I can confirm that the DragSource functions are working, but nothing I log from the DropTarget spec functions is making it to the console, it's like they totally aren't applied.

import React, { Component } from 'react'
import { DropTarget, DragSource } from 'react-dnd'
import _ from 'lodash'

export const ItemTypes = {
    CATEGORY: 'category-item'
}

class CategoryTreeFork extends Component {

    componentWillReceiveProps = (nextProps) => {
        console.log("Next cat props", nextProps)
    }

    render(){
        var { thisCat, childCat, level, dropEvent } = this.props
        const { connectDragSource, connectDropTarget, isDragging, isOver } = this.props

        return connectDragSource(
            <div className="category-tree-fork">
                <div className={`category-list-item level-${level}`}
                    style={{
                        opacity: isDragging ? 0.5 : 1,
                        backgroundColor: isOver ? "red" : "silver"
                    }}>
                    {thisCat.name}
                </div>
            </div>
        )   
    }   
}

/* get dragged */
const sourceSpec = { 
    beginDrag(props){
        return { category_id: props.thisCat.category_id }
    }   
}

const sourceCollect  = (connect, monitor) => {
    return {
        connectDragSource: connect.dragSource(),
        isDragging: monitor.isDragging()
    }
}


/* get dragged onto */
const targetSpec  = {
    drop(props, monitor, component) {
        const item = monitor.getItem()
        console.log("me or my friend?", item)
    },
    hover(props, monitor, component){
        console.log("yo what you hoverin there for homie?")
    }
}

const targetCollect = (connect, monitor) => {
    return {
        connectDropTarget: connect.dropTarget(),
        isOver: monitor.isOver()
    }
}


export default _.flow([
    DragSource(ItemTypes.CATEGORY, sourceSpec, sourceCollect),
    DropTarget(ItemTypes.CATEGORY, targetSpec, targetCollect)
])(CategoryTreeFork)