There is no experience you can have （ ）is more excitng than

同位语从句与前面的名词是同位关系,即说明它前面名词的内容；而定语从句与前面的名词是修饰与被修饰关系,即限定它前面的名词范围,或补充一些情况.如：
The news that l have passed the exam is true．我通过了考试这一消息是真的.
（同位语从句,即从句所表达的意思就是前面名词的内容.）
The news that he told me just now is true．他刚才告诉我的消息是真的.
（定语从句,从句对前面名词起修饰限制作用,即“他告诉我的”那个消息,而不是别的消息.）

what 从句There is no experience you can have

答案错了呀!应该填that.
由that引导的从句,形容no experience,则此句原为: no experience (替代that这个同位语) is more excisting than...
如果非要用what,就应为There is no experience you can have like what it is for skating on real ice.

There is no experience[ (that)you can have 做experience 的定语]【（what ）is more excitng than skating on real ice做experience的同位语 what 做同位语从句的主语】.